]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/EditPage.php
MediaWiki 1.14.0
[autoinstallsdev/mediawiki.git] / includes / EditPage.php
index cceb053db8cbe78fab8d52f3cf11d1959e4816aa..0193dc38c82c7cc0038d1bae57d6b778e749ac22 100644 (file)
@@ -1,6 +1,7 @@
 <?php
 /**
  * Contains the EditPage class
+ * @file
  */
 
 /**
@@ -8,10 +9,42 @@
  * The actual database and text munging is still in Article,
  * but it should get easier to call those from alternate
  * interfaces.
+ *
+ * EditPage cares about two distinct titles:
+ * $wgTitle is the page that forms submit to, links point to,
+ * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
+ * page in the database that is actually being edited. These are
+ * usually the same, but they are now allowed to be different.
  */
 class EditPage {
+       const AS_SUCCESS_UPDATE                 = 200;
+       const AS_SUCCESS_NEW_ARTICLE            = 201;
+       const AS_HOOK_ERROR                     = 210;
+       const AS_FILTERING                      = 211;
+       const AS_HOOK_ERROR_EXPECTED            = 212;
+       const AS_BLOCKED_PAGE_FOR_USER          = 215;
+       const AS_CONTENT_TOO_BIG                = 216;
+       const AS_USER_CANNOT_EDIT               = 217;
+       const AS_READ_ONLY_PAGE_ANON            = 218;
+       const AS_READ_ONLY_PAGE_LOGGED          = 219;
+       const AS_READ_ONLY_PAGE                 = 220;
+       const AS_RATE_LIMITED                   = 221;
+       const AS_ARTICLE_WAS_DELETED            = 222;
+       const AS_NO_CREATE_PERMISSION           = 223;
+       const AS_BLANK_ARTICLE                  = 224;
+       const AS_CONFLICT_DETECTED              = 225;
+       const AS_SUMMARY_NEEDED                 = 226;
+       const AS_TEXTBOX_EMPTY                  = 228;
+       const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
+       const AS_OK                             = 230;
+       const AS_END                            = 231;
+       const AS_SPAM_ERROR                     = 232;
+       const AS_IMAGE_REDIRECT_ANON            = 233;
+       const AS_IMAGE_REDIRECT_LOGGED          = 234;
+
        var $mArticle;
        var $mTitle;
+       var $action;
        var $mMetaData = '';
        var $isConflict = false;
        var $isCssJsSubpage = false;
@@ -29,7 +62,9 @@ class EditPage {
        var $allowBlankSummary = false;
        var $autoSumm = '';
        var $hookError = '';
-       var $mPreviewTemplates;
+       #var $mPreviewTemplates;
+       var $mParserOutput;
+       var $mBaseRevision = false;
 
        # Form values
        var $save = false, $preview = false, $diff = false;
@@ -42,67 +77,74 @@ class EditPage {
        # extensions should take care to _append_ to the present value
        public $editFormPageTop; // Before even the preview
        public $editFormTextTop;
+       public $editFormTextBeforeContent;
        public $editFormTextAfterWarn;
        public $editFormTextAfterTools;
        public $editFormTextBottom;
 
+       /* $didSave should be set to true whenever an article was succesfully altered. */
+       public $didSave = false;
+
+       public $suppressIntro = false;
+
        /**
         * @todo document
         * @param $article
         */
        function EditPage( $article ) {
                $this->mArticle =& $article;
-               global $wgTitle;
-               $this->mTitle =& $wgTitle;
+               $this->mTitle = $article->getTitle();
+               $this->action = 'submit';
 
                # Placeholders for text injection by hooks (empty per default)
                $this->editFormPageTop =
                $this->editFormTextTop =
+               $this->editFormTextBeforeContent =
                $this->editFormTextAfterWarn =
                $this->editFormTextAfterTools =
                $this->editFormTextBottom = "";
        }
        
+       function getArticle() {
+               return $this->mArticle;
+       }
+
        /**
         * Fetch initial editing page content.
+        * @private
         */
-       private function getContent( $def_text = '' ) {
-               global $wgOut, $wgRequest, $wgParser;
+       function getContent( $def_text = '' ) {
+               global $wgOut, $wgRequest, $wgParser, $wgContLang, $wgMessageCache;
 
+               wfProfileIn( __METHOD__ );
                # Get variables from query string :P
                $section = $wgRequest->getVal( 'section' );
                $preload = $wgRequest->getVal( 'preload' );
                $undoafter = $wgRequest->getVal( 'undoafter' );
                $undo = $wgRequest->getVal( 'undo' );
 
-               wfProfileIn( __METHOD__ );
-
                $text = '';
-               if( !$this->mTitle->exists() ) {
+               // For message page not locally set, use the i18n message.
+               // For other non-existent articles, use preload text if any.
+               if ( !$this->mTitle->exists() ) {
                        if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
-                               # If this is a system message, get the default text. 
-                               $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
+                               # If this is a system message, get the default text.
+                               list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
+                               $wgMessageCache->loadAllMessages( $lang );
+                               $text = wfMsgGetKey( $message, false, $lang, false );
+                               if( wfEmptyMsg( $message, $text ) )
+                                       $text = '';
                        } else {
                                # If requested, preload some text.
                                $text = $this->getPreloadedText( $preload );
                        }
-                       # We used to put MediaWiki:Newarticletext here if
-                       # $text was empty at this point.
-                       # This is now shown above the edit box instead.
+               // For existing pages, get text based on "undo" or section parameters.
                } else {
-                       // FIXME: may be better to use Revision class directly
-                       // But don't mess with it just yet. Article knows how to
-                       // fetch the page record from the high-priority server,
-                       // which is needed to guarantee we don't pick up lagged
-                       // information.
-
                        $text = $this->mArticle->getContent();
-
-                       if ($undo > 0 && $undoafter > 0 && $undo < $undoafter) {
+                       if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
                                # If they got undoafter and undo round the wrong way, switch them
                                list( $undo, $undoafter ) = array( $undoafter, $undo );
                        }
-
                        if ( $undo > 0 && $undo > $undoafter ) {
                                # Undoing a specific edit overrides section editing; section-editing
                                # doesn't work with undoing.
@@ -114,42 +156,46 @@ class EditPage {
                                        $oldrev = $undorev ? $undorev->getPrevious() : null;
                                }
 
-                               #Sanity check, make sure it's the right page.
+                               # Sanity check, make sure it's the right page,
+                               # the revisions exist and they were not deleted.
                                # Otherwise, $text will be left as-is.
-                               if ( !is_null($undorev) && !is_null($oldrev) && $undorev->getPage()==$oldrev->getPage() && $undorev->getPage()==$this->mArticle->getID() ) {
+                               if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
+                                       $undorev->getPage() == $oldrev->getPage() &&
+                                       $undorev->getPage() == $this->mArticle->getID() &&
+                                       !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
+                                       !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
                                        $undorev_text = $undorev->getText();
                                        $oldrev_text = $oldrev->getText();
                                        $currev_text = $text;
 
-                                       #No use doing a merge if it's just a straight revert.
                                        if ( $currev_text != $undorev_text ) {
-                                               $result = wfMerge($undorev_text, $oldrev_text, $currev_text, $text);
+                                               $result = wfMerge( $undorev_text, $oldrev_text, $currev_text, $text );
                                        } else {
+                                               # No use doing a merge if it's just a straight revert.
                                                $text = $oldrev_text;
                                                $result = true;
                                        }
+                                       if ( $result ) {
+                                               # Inform the user of our success and set an automatic edit summary
+                                               $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
+                                               $firstrev = $oldrev->getNext();
+                                               # If we just undid one rev, use an autosummary
+                                               if ( $firstrev->mId == $undo ) {
+                                                       $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
+                                               }
+                                               $this->formtype = 'diff';
+                                       } else {
+                                               # Warn the user that something went wrong
+                                               $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
+                                       }
                                } else {
                                        // Failed basic sanity checks.
                                        // Older revisions may have been removed since the link
                                        // was created, or we may simply have got bogus input.
-                                       $result = false;
-                               }
-
-                               if( $result ) {
-                                       # Inform the user of our success and set an automatic edit summary
-                                       $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-success' ) );
-                                       $firstrev = $oldrev->getNext();
-                                       # If we just undid one rev, use an autosummary
-                                       if ( $firstrev->mId == $undo ) {
-                                               $this->summary = wfMsgForContent('undo-summary', $undo, $undorev->getUserText());
-                                       }
-                                       $this->formtype = 'diff';
-                               } else {
-                                       # Warn the user that something went wrong
-                                       $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-failure' ) );
+                                       $this->editFormPageTop .= $wgOut->parse( wfMsgNoTrans( 'undo-norev' ) );
                                }
-                       } else if( $section != '' ) {
-                               if( $section == 'new' ) {
+                       } else if ( $section != '' ) {
+                               if ( $section == 'new' ) {
                                        $text = $this->getPreloadedText( $preload );
                                } else {
                                        $text = $wgParser->getSection( $text, $section, $def_text );
@@ -167,13 +213,13 @@ class EditPage {
         * @param $preload String: the title of the page.
         * @return string The contents of the page.
         */
-       private function getPreloadedText($preload) {
-               if ( $preload === '' )
+       protected function getPreloadedText( $preload ) {
+               if ( $preload === '' ) {
                        return '';
-               else {
+               else {
                        $preloadTitle = Title::newFromText( $preload );
                        if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
-                               $rev=Revision::newFromTitle($preloadTitle);
+                               $rev = Revision::newFromTitle($preloadTitle);
                                if ( is_object( $rev ) ) {
                                        $text = $rev->getText();
                                        // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
@@ -192,93 +238,108 @@ class EditPage {
         *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
         */
        function extractMetaDataFromArticle () {
-               global $wgUseMetadataEdit , $wgMetadataWhitelist , $wgLang ;
-               $this->mMetaData = '' ;
-               if ( !$wgUseMetadataEdit ) return ;
-               if ( $wgMetadataWhitelist == '' ) return ;
-               $s = '' ;
+               global $wgUseMetadataEdit, $wgMetadataWhitelist, $wgContLang;
+               $this->mMetaData = '';
+               if ( !$wgUseMetadataEdit ) return;
+               if ( $wgMetadataWhitelist == '' ) return;
+               $s = '';
                $t = $this->getContent();
 
                # MISSING : <nowiki> filtering
 
                # Categories and language links
-               $t = explode ( "\n" , $t ) ;
-               $catlow = strtolower ( $wgLang->getNsText ( NS_CATEGORY ) ) ;
-               $cat = $ll = array() ;
-               foreach ( $t AS $key => $x )
-               {
-                       $y = trim ( strtolower ( $x ) ) ;
-                       while ( substr ( $y , 0 , 2 ) == '[[' )
-                       {
-                               $y = explode ( ']]' , trim ( $x ) ) ;
-                               $first = array_shift ( $y ) ;
-                               $first = explode ( ':' , $first ) ;
-                               $ns = array_shift ( $first ) ;
-                               $ns = trim ( str_replace ( '[' , '' , $ns ) ) ;
-                               if ( strlen ( $ns ) == 2 OR strtolower ( $ns ) == $catlow )
-                               {
-                                       $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]' ;
-                                       if ( strtolower ( $ns ) == $catlow ) $cat[] = $add ;
-                                       else $ll[] = $add ;
-                                       $x = implode ( ']]' , $y ) ;
-                                       $t[$key] = $x ;
-                                       $y = trim ( strtolower ( $x ) ) ;
+               $t = explode ( "\n" , $t );
+               $catlow = strtolower ( $wgContLang->getNsText( NS_CATEGORY ) );
+               $cat = $ll = array();
+               foreach ( $t AS $key => $x ) {
+                       $y = trim ( strtolower ( $x ) );
+                       while ( substr ( $y , 0 , 2 ) == '[[' ) {
+                               $y = explode ( ']]' , trim ( $x ) );
+                               $first = array_shift ( $y );
+                               $first = explode ( ':' , $first );
+                               $ns = array_shift ( $first );
+                               $ns = trim ( str_replace ( '[' , '' , $ns ) );
+                               if ( $wgContLang->getLanguageName( $ns ) || strtolower ( $ns ) == $catlow ) {
+                                       $add = '[[' . $ns . ':' . implode ( ':' , $first ) . ']]';
+                                       if ( strtolower ( $ns ) == $catlow ) $cat[] = $add;
+                                       else $ll[] = $add;
+                                       $x = implode ( ']]' , $y );
+                                       $t[$key] = $x;
+                                       $y = trim ( strtolower ( $x ) );
+                               } else {
+                                       $x = implode ( ']]' , $y );
+                                       $y = trim ( strtolower ( $x ) );
                                }
                        }
                }
-               if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n" ;
-               if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n" ;
-               $t = implode ( "\n" , $t ) ;
+               if ( count ( $cat ) ) $s .= implode ( ' ' , $cat ) . "\n";
+               if ( count ( $ll ) ) $s .= implode ( ' ' , $ll ) . "\n";
+               $t = implode ( "\n" , $t );
 
                # Load whitelist
                $sat = array () ; # stand-alone-templates; must be lowercase
-               $wl_title = Title::newFromText ( $wgMetadataWhitelist ) ;
-               $wl_article = new Article ( $wl_title ) ;
-               $wl = explode ( "\n" , $wl_article->getContent() ) ;
-               foreach ( $wl AS $x )
-               {
-                       $isentry = false ;
-                       $x = trim ( $x ) ;
-                       while ( substr ( $x , 0 , 1 ) == '*' )
-                       {
-                               $isentry = true ;
-                               $x = trim ( substr ( $x , 1 ) ) ;
+               $wl_title = Title::newFromText ( $wgMetadataWhitelist );
+               $wl_article = new Article ( $wl_title );
+               $wl = explode ( "\n" , $wl_article->getContent() );
+               foreach ( $wl AS $x ) {
+                       $isentry = false;
+                       $x = trim ( $x );
+                       while ( substr ( $x , 0 , 1 ) == '*' ) {
+                               $isentry = true;
+                               $x = trim ( substr ( $x , 1 ) );
                        }
-                       if ( $isentry )
-                       {
-                               $sat[] = strtolower ( $x ) ;
+                       if ( $isentry ) {
+                               $sat[] = strtolower ( $x );
                        }
 
                }
 
                # Templates, but only some
-               $t = explode ( '{{' , $t ) ;
+               $t = explode ( '{{' , $t );
                $tl = array () ;
-               foreach ( $t AS $key => $x )
-               {
-                       $y = explode ( '}}' , $x , 2 ) ;
-                       if ( count ( $y ) == 2 )
-                       {
-                               $z = $y[0] ;
-                               $z = explode ( '|' , $z ) ;
-                               $tn = array_shift ( $z ) ;
-                               if ( in_array ( strtolower ( $tn ) , $sat ) )
-                               {
-                                       $tl[] = '{{' . $y[0] . '}}' ;
-                                       $t[$key] = $y[1] ;
-                                       $y = explode ( '}}' , $y[1] , 2 ) ;
+               foreach ( $t AS $key => $x ) {
+                       $y = explode ( '}}' , $x , 2 );
+                       if ( count ( $y ) == 2 ) {
+                               $z = $y[0];
+                               $z = explode ( '|' , $z );
+                               $tn = array_shift ( $z );
+                               if ( in_array ( strtolower ( $tn ) , $sat ) ) {
+                                       $tl[] = '{{' . $y[0] . '}}';
+                                       $t[$key] = $y[1];
+                                       $y = explode ( '}}' , $y[1] , 2 );
                                }
-                               else $t[$key] = '{{' . $x ;
+                               else $t[$key] = '{{' . $x;
                        }
-                       else if ( $key != 0 ) $t[$key] = '{{' . $x ;
-                       else $t[$key] = $x ;
+                       else if ( $key != 0 ) $t[$key] = '{{' . $x;
+                       else $t[$key] = $x;
                }
-               if ( count ( $tl ) ) $s .= implode ( ' ' , $tl ) ;
-               $t = implode ( '' , $t ) ;
+               if ( count ( $tl ) ) $s .= implode ( ' ' , $tl );
+               $t = implode ( '' , $t );
+
+               $t = str_replace ( "\n\n\n" , "\n" , $t );
+               $this->mArticle->mContent = $t;
+               $this->mMetaData = $s;
+       }
 
-               $t = str_replace ( "\n\n\n" , "\n" , $t ) ;
-               $this->mArticle->mContent = $t ;
-               $this->mMetaData = $s ;
+       /* 
+        * Check if a page was deleted while the user was editing it, before submit.
+        * Note that we rely on the logging table, which hasn't been always there,
+        * but that doesn't matter, because this only applies to brand new
+        * deletes.
+        */
+       protected function wasDeletedSinceLastEdit() {
+               if ( $this->deletedSinceEdit )
+                       return true;
+               if ( $this->mTitle->isDeleted() ) {
+                       $this->lastDelete = $this->getLastDelete();
+                       if ( $this->lastDelete ) {
+                               $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
+                               if ( $deleteTime > $this->starttime ) {
+                                       $this->deletedSinceEdit = true;
+                               }
+                       }
+               }
+               return $this->deletedSinceEdit;
        }
 
        function submit() {
@@ -297,58 +358,39 @@ class EditPage {
         * the newly-edited page.
         */
        function edit() {
-               global $wgOut, $wgUser, $wgRequest, $wgTitle;
-
-               if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
+               global $wgOut, $wgUser, $wgRequest;
+               // Allow extensions to modify/prevent this form or submission
+               if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) ) {
                        return;
+               }
 
-               $fname = 'EditPage::edit';
-               wfProfileIn( $fname );
-               wfDebug( "$fname: enter\n" );
+               wfProfileIn( __METHOD__ );
+               wfDebug( __METHOD__.": enter\n" );
 
-               // this is not an article
-               $wgOut->setArticleFlag(false);
+               // This is not an article
+               $wgOut->setArticleFlag( false );
 
                $this->importFormData( $wgRequest );
                $this->firsttime = false;
 
-               if( $this->live ) {
+               if ( $this->live ) {
                        $this->livePreview();
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
 
-               $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser);
-               if( !$this->mTitle->exists() )
-                       $permErrors += $this->mTitle->getUserPermissionsErrors( 'create', $wgUser);
-
-               # Ignore some permissions errors.
-               $remove = array();
-               foreach( $permErrors as $error ) {
-                       if ($this->preview || $this->diff &&
-                               ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext'))
-                       {
-                               // Don't worry about blocks when previewing/diffing
-                               $remove[] = $error;
-                       }
-
-                       if ($error[0] == 'readonlytext')
-                       {
-                               if ($this->edit) {
-                                       $this->formtype = 'preview';
-                               } elseif ($this->save || $this->preview || $this->diff) {
-                                       $remove[] = $error;
-                               }
-                       }
+               if ( wfReadOnly() && $this->save ) {
+                               // Force preview
+                               $this->save = false;
+                               $this->preview = true;
                }
-               # array_diff returns elements in $permErrors that are not in $remove.
-               $permErrors = array_diff( $permErrors, $remove );
 
-               if ( !empty($permErrors) )
-               {
-                       wfDebug( "$fname: User can't edit\n" );
-                       $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
-                       wfProfileOut( $fname );
+               $wgOut->addScriptFile( 'edit.js' );
+               $permErrors = $this->getEditPermissionErrors();
+               if ( $permErrors ) {
+                       wfDebug( __METHOD__.": User can't edit\n" );
+                       $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
+                       wfProfileOut( __METHOD__ );
                        return;
                } else {
                        if ( $this->save ) {
@@ -359,7 +401,7 @@ class EditPage {
                                $this->formtype = 'diff';
                        } else { # First time through
                                $this->firsttime = true;
-                               if( $this->previewOnOpen() ) {
+                               if ( $this->previewOnOpen() ) {
                                        $this->formtype = 'preview';
                                } else {
                                        $this->extractMetaDataFromArticle () ;
@@ -368,40 +410,38 @@ class EditPage {
                        }
                }
 
-               wfProfileIn( "$fname-business-end" );
+               wfProfileIn( __METHOD__."-business-end" );
 
                $this->isConflict = false;
                // css / js subpages of user pages get a special treatment
-               $this->isCssJsSubpage      = $wgTitle->isCssJsSubpage();
-               $this->isValidCssJsSubpage = $wgTitle->isValidCssJsSubpage();
-
-               /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
-                * no matter it's current state
-                */
-               $this->deletedSinceEdit = false;
-               if ( $this->edittime != '' ) {
-                       /* Note that we rely on logging table, which hasn't been always there,
-                        * but that doesn't matter, because this only applies to brand new
-                        * deletes. This is done on every preview and save request. Move it further down
-                        * to only perform it on saves
-                        */
-                       if ( $this->mTitle->isDeleted() ) {
-                               $this->lastDelete = $this->getLastDelete();
-                               if ( !is_null($this->lastDelete) ) {
-                                       $deletetime = $this->lastDelete->log_timestamp;
-                                       if ( ($deletetime - $this->starttime) > 0 ) {
-                                               $this->deletedSinceEdit = true;
-                                       }
-                               }
-                       }
-               }
+               $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
+               $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 
                # Show applicable editing introductions
-               if( $this->formtype == 'initial' || $this->firsttime )
+               if ( $this->formtype == 'initial' || $this->firsttime )
                        $this->showIntro();
-       
-               if( $this->mTitle->isTalkPage() ) {
-                       $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
+
+               if ( $this->mTitle->isTalkPage() ) {
+                       $wgOut->addWikiMsg( 'talkpagetext' );
+               }
+
+               # Optional notices on a per-namespace and per-page basis
+               $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
+               $editnotice_page = $editnotice_ns.'-'.$this->mTitle->getDBkey();
+               if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
+                       $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
+               }
+               if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
+                       $parts = explode( '/', $this->mTitle->getDBkey() );
+                       $editnotice_base = $editnotice_ns;
+                       while ( count( $parts ) > 0 ) {
+                               $editnotice_base .= '-'.array_shift( $parts );
+                               if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
+                                       $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
+                               }
+                       }
+               } else if ( !wfEmptyMsg( $editnotice_page, wfMsgForContent( $editnotice_page ) ) ) {
+                       $wgOut->addWikiText( wfMsgForContent( $editnotice_page ) );
                }
 
                # Attempt submission here.  This will check for edit conflicts,
@@ -411,8 +451,8 @@ class EditPage {
 
                if ( 'save' == $this->formtype ) {
                        if ( !$this->attemptSave() ) {
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
                }
@@ -420,19 +460,57 @@ class EditPage {
                # First time through: get contents, set time for conflict
                # checking, etc.
                if ( 'initial' == $this->formtype || $this->firsttime ) {
-                       if ($this->initialiseForm() === false) {
+                       if ( $this->initialiseForm() === false) {
                                $this->noSuchSectionPage();
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
-                       if( !$this->mTitle->getArticleId() ) 
+                       if ( !$this->mTitle->getArticleId() )
                                wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
                }
 
                $this->showEditForm();
-               wfProfileOut( "$fname-business-end" );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__."-business-end" );
+               wfProfileOut( __METHOD__ );
+       }
+       
+       protected function getEditPermissionErrors() {
+               global $wgUser;
+               $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
+               # Can this title be created?
+               if ( !$this->mTitle->exists() ) {
+                       $permErrors = array_merge( $permErrors,
+                               wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
+               }
+               # Ignore some permissions errors when a user is just previewing/viewing diffs
+               $remove = array();
+               foreach( $permErrors as $error ) {
+                       if ( ($this->preview || $this->diff) && 
+                               ($error[0] == 'blockedtext' || $error[0] == 'autoblockedtext') )
+                       {
+                               $remove[] = $error;
+                       }
+               }
+               $permErrors = wfArrayDiff2( $permErrors, $remove );
+               return $permErrors;
+       }
+
+       /**
+        * Show a read-only error
+        * Parameters are the same as OutputPage:readOnlyPage()
+        * Redirect to the article page if redlink=1
+        */
+       function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
+               global $wgRequest, $wgOut;
+               if ( $wgRequest->getBool( 'redlink' ) ) {
+                       // The edit page was reached via a red link.
+                       // Redirect to the article page and let them click the edit tab if
+                       // they really want a permission error.
+                       $wgOut->redirect( $this->mTitle->getFullUrl() );
+               } else {
+                       $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
+               }
        }
 
        /**
@@ -440,21 +518,21 @@ class EditPage {
         *
         * @return bool
         */
-       private function previewOnOpen() {
+       protected function previewOnOpen() {
                global $wgRequest, $wgUser;
-               if( $wgRequest->getVal( 'preview' ) == 'yes' ) {
+               if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
                        // Explicit override from request
                        return true;
-               } elseif( $wgRequest->getVal( 'preview' ) == 'no' ) {
+               } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
                        // Explicit override from request
                        return false;
-               } elseif( $this->section == 'new' ) {
+               } elseif ( $this->section == 'new' ) {
                        // Nothing *to* preview for new sections
                        return false;
-               } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
+               } elseif ( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
                        // Standard preference behaviour
                        return true;
-               } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
+               } elseif ( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
                        // Categories are special
                        return true;
                } else {
@@ -471,22 +549,28 @@ class EditPage {
                $fname = 'EditPage::importFormData';
                wfProfileIn( $fname );
 
-               if( $request->wasPosted() ) {
+               # Section edit can come from either the form or a link
+               $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
+
+               if ( $request->wasPosted() ) {
                        # These fields need to be checked for encoding.
                        # Also remove trailing whitespace, but don't remove _initial_
                        # whitespace from the text boxes. This may be significant formatting.
                        $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
                        $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
-                       $this->mMetaData = rtrim( $request->getText( 'metadata'   ) );
+                       $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
                        # Truncate for whole multibyte characters. +5 bytes for ellipsis
-                       $this->summary   = $wgLang->truncate( $request->getText( 'wpSummary'  ), 250 );
+                       $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250 );
+
+                       # Remove extra headings from summaries and new sections.
+                       $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 
                        $this->edittime = $request->getVal( 'wpEdittime' );
                        $this->starttime = $request->getVal( 'wpStarttime' );
 
                        $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 
-                       if( is_null( $this->edittime ) ) {
+                       if ( is_null( $this->edittime ) ) {
                                # If the form is incomplete, force to preview.
                                wfDebug( "$fname: Form data appears to be incomplete\n" );
                                wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
@@ -516,12 +600,12 @@ class EditPage {
                                        $this->preview = true;
                                }
                        }
-                       $this->save    = ! ( $this->preview OR $this->diff );
-                       if( !preg_match( '/^\d{14}$/', $this->edittime )) {
+                       $this->save = !$this->preview && !$this->diff;
+                       if ( !preg_match( '/^\d{14}$/', $this->edittime )) {
                                $this->edittime = null;
                        }
 
-                       if( !preg_match( '/^\d{14}$/', $this->starttime )) {
+                       if ( !preg_match( '/^\d{14}$/', $this->starttime )) {
                                $this->starttime = null;
                        }
 
@@ -531,13 +615,15 @@ class EditPage {
                        $this->watchthis = $request->getCheck( 'wpWatchthis' );
 
                        # Don't force edit summaries when a user is editing their own user or talk page
-                       if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
+                       if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && 
+                               $this->mTitle->getText() == $wgUser->getName() ) 
+                       {
                                $this->allowBlankSummary = true;
                        } else {
-                               $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
+                               $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
                        }
 
-                       $this->autoSumm = $request->getText( 'wpAutoSummary' ); 
+                       $this->autoSumm = $request->getText( 'wpAutoSummary' );
                } else {
                        # Not a posted form? Start with nothing.
                        wfDebug( "$fname: Not a posted form.\n" );
@@ -554,13 +640,14 @@ class EditPage {
                        $this->minoredit = false;
                        $this->watchthis = false;
                        $this->recreate  = false;
+
+                       if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
+                               $this->summary = $request->getVal( 'preloadtitle' );
+                       }
                }
 
                $this->oldid = $request->getInt( 'oldid' );
 
-               # Section edit can come from either the form or a link
-               $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
-
                $this->live = $request->getCheck( 'live' );
                $this->editintro = $request->getText( 'editintro' );
 
@@ -585,30 +672,48 @@ class EditPage {
        /**
         * Show all applicable editing introductions
         */
-       private function showIntro() {
+       protected function showIntro() {
                global $wgOut, $wgUser;
-               if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
-                       if( $wgUser->isLoggedIn() ) {
-                               $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
+               if ( $this->suppressIntro ) {
+                       return;
+               }
+               # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
+               if ( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
+                       $parts = explode( '/', $this->mTitle->getText(), 2 );
+                       $username = $parts[0];
+                       $id = User::idFromName( $username );
+                       $ip = User::isIP( $username );
+                       if ( $id == 0 && !$ip ) {
+                               $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
+                                       array( 'userpage-userdoesnotexist', $username ) );
+                       }
+               }
+               # Try to add a custom edit intro, or use the standard one if this is not possible.
+               if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
+                       if ( $wgUser->isLoggedIn() ) {
+                               $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
                        } else {
-                               $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
+                               $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
                        }
+               }
+               # Give a notice if the user is editing a deleted page...
+               if ( !$this->mTitle->exists() ) {
                        $this->showDeletionLog( $wgOut );
                }
        }
-       
+
        /**
         * Attempt to show a custom editing introduction, if supplied
         *
         * @return bool
         */
-       private function showCustomIntro() {
-               if( $this->editintro ) {
+       protected function showCustomIntro() {
+               if ( $this->editintro ) {
                        $title = Title::newFromText( $this->editintro );
-                       if( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
+                       if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
                                global $wgOut;
                                $revision = Revision::newFromTitle( $title );
-                               $wgOut->addSecondaryWikiText( $revision->getText() );
+                               $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
                                return true;
                        } else {
                                return false;
@@ -619,21 +724,32 @@ class EditPage {
        }
 
        /**
-        * Attempt submission
-        * @return bool false if output is done, true if the rest of the form should be displayed
+        * Attempt submission (no UI)
+        * @return one of the constants describing the result
         */
-       function attemptSave() {
-               global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut;
+       function internalAttemptSave( &$result, $bot = false ) {
+               global $wgFilterCallback, $wgUser, $wgOut, $wgParser;
                global $wgMaxArticleSize;
 
                $fname = 'EditPage::attemptSave';
                wfProfileIn( $fname );
                wfProfileIn( "$fname-checks" );
 
-               if( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
+               if ( !wfRunHooks( 'EditPage::attemptSave', array( &$this ) ) )
                {
                        wfDebug( "Hook 'EditPage::attemptSave' aborted article saving" );
-                       return false;
+                       return self::AS_HOOK_ERROR;
+               }
+
+               # Check image redirect
+               if ( $this->mTitle->getNamespace() == NS_FILE &&
+                       Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
+                       !$wgUser->isAllowed( 'upload' ) ) {
+                               if ( $wgUser->isAnon() ) {
+                                       return self::AS_IMAGE_REDIRECT_ANON;
+                               } else {
+                                       return self::AS_IMAGE_REDIRECT_LOGGED;
+                               }
                }
 
                # Reintegrate metadata
@@ -641,36 +757,42 @@ class EditPage {
                $this->mMetaData = '' ;
 
                # Check for spam
-               $matches = array();
-               if ( $wgSpamRegex && preg_match( $wgSpamRegex, $this->textbox1, $matches ) ) {
-                       $this->spamPage ( $matches[0] );
+               $match = self::matchSpamRegex( $this->summary );
+               if ( $match === false ) {
+                       $match = self::matchSpamRegex( $this->textbox1 );
+               }
+               if ( $match !== false ) {
+                       $result['spam'] = $match;
+                       $ip = wfGetIP();
+                       $pdbk = $this->mTitle->getPrefixedDBkey();
+                       $match = str_replace( "\n", '', $match );
+                       wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SPAM_ERROR;
                }
-               if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
+               if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
                        # Error messages or other handling should be performed by the filter function
-                       wfProfileOut( $fname );
                        wfProfileOut( "$fname-checks" );
-                       return false;
+                       wfProfileOut( $fname );
+                       return self::AS_FILTERING;
                }
-               if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError ) ) ) {
+               if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
                        # Error messages etc. could be handled within the hook...
-                       wfProfileOut( $fname );
                        wfProfileOut( "$fname-checks" );
-                       return false;
-               } elseif( $this->hookError != '' ) {
+                       wfProfileOut( $fname );
+                       return self::AS_HOOK_ERROR;
+               } elseif ( $this->hookError != '' ) {
                        # ...or the hook could be expecting us to produce an error
-                       wfProfileOut( "$fname-checks " );
+                       wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_HOOK_ERROR_EXPECTED;
                }
                if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
                        # Check block state against master, thus 'false'.
-                       $this->blockedPage();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_BLOCKED_PAGE_FOR_USER;
                }
                $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
                if ( $this->kblength > $wgMaxArticleSize ) {
@@ -678,43 +800,39 @@ class EditPage {
                        $this->tooBig = true;
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_CONTENT_TOO_BIG;
                }
 
                if ( !$wgUser->isAllowed('edit') ) {
                        if ( $wgUser->isAnon() ) {
-                               $this->userNotLoggedInPage();
                                wfProfileOut( "$fname-checks" );
                                wfProfileOut( $fname );
-                               return false;
+                               return self::AS_READ_ONLY_PAGE_ANON;
                        }
                        else {
-                               $wgOut->readOnlyPage();
                                wfProfileOut( "$fname-checks" );
                                wfProfileOut( $fname );
-                               return false;
+                               return self::AS_READ_ONLY_PAGE_LOGGED;
                        }
                }
 
                if ( wfReadOnly() ) {
-                       $wgOut->readOnlyPage();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_READ_ONLY_PAGE;
                }
                if ( $wgUser->pingLimiter() ) {
-                       $wgOut->rateLimited();
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_RATE_LIMITED;
                }
 
                # If the article has been deleted while editing, don't save it without
                # confirmation
-               if ( $this->deletedSinceEdit && !$this->recreate ) {
+               if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_ARTICLE_WAS_DELETED;
                }
 
                wfProfileOut( "$fname-checks" );
@@ -722,28 +840,33 @@ class EditPage {
                # If article is new, insert it.
                $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
                if ( 0 == $aid ) {
-
                        // Late check for create permission, just in case *PARANOIA*
                        if ( !$this->mTitle->userCan( 'create' ) ) {
                                wfDebug( "$fname: no create permission\n" );
-                               $this->noCreatePermission();
                                wfProfileOut( $fname );
-                               return;
+                               return self::AS_NO_CREATE_PERMISSION;
                        }
 
                        # Don't save a new article if it's blank.
-                       if ( ( '' == $this->textbox1 ) ) {
-                                       $wgOut->redirect( $this->mTitle->getFullURL() );
-                                       wfProfileOut( $fname );
-                                       return false;
+                       if ( '' == $this->textbox1 ) {
+                               wfProfileOut( $fname );
+                               return self::AS_BLANK_ARTICLE;
                        }
 
-                       $isComment=($this->section=='new');
+                       // Run post-section-merge edit filter
+                       if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
+                               # Error messages etc. could be handled within the hook...
+                               wfProfileOut( $fname );
+                               return self::AS_HOOK_ERROR;
+                       }
+
+                       $isComment = ( $this->section == 'new' );
+
                        $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
-                               $this->minoredit, $this->watchthis, false, $isComment);
+                               $this->minoredit, $this->watchthis, false, $isComment, $bot);
 
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SUCCESS_NEW_ARTICLE;
                }
 
                # Article exists. Check for edit conflict.
@@ -753,10 +876,10 @@ class EditPage {
 
                wfDebug("timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n");
 
-               if( $this->mArticle->getTimestamp() != $this->edittime ) {
+               if ( $this->mArticle->getTimestamp() != $this->edittime ) {
                        $this->isConflict = true;
-                       if( $this->section == 'new' ) {
-                               if( $this->mArticle->getUserText() == $wgUser->getName() &&
+                       if ( $this->section == 'new' ) {
+                               if ( $this->mArticle->getUserText() == $wgUser->getName() &&
                                        $this->mArticle->getComment() == $this->summary ) {
                                        // Probably a duplicate submission of a new comment.
                                        // This can happen when squid resends a request after
@@ -769,9 +892,9 @@ class EditPage {
                                }
                        }
                }
-               $userid = $wgUser->getID();
+               $userid = $wgUser->getId();
 
-               if ( $this->isConflict) {
+               if ( $this->isConflict ) {
                        wfDebug( "EditPage::editForm conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
                                $this->mArticle->getTimestamp() . "')\n" );
                        $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime);
@@ -780,21 +903,21 @@ class EditPage {
                        wfDebug( "EditPage::editForm getting section '$this->section'\n" );
                        $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary);
                }
-               if( is_null( $text ) ) {
+               if ( is_null( $text ) ) {
                        wfDebug( "EditPage::editForm activating conflict; section replace failed.\n" );
                        $this->isConflict = true;
                        $text = $this->textbox1;
                }
 
                # Suppress edit conflict with self, except for section edits where merging is required.
-               if ( ( $this->section == '' ) && ( 0 != $userid ) && ( $this->mArticle->getUser() == $userid ) ) {
+               if ( $this->section == '' && $userid && $this->userWasLastToEdit($userid,$this->edittime) ) {
                        wfDebug( "EditPage::editForm Suppressing edit conflict, same user.\n" );
                        $this->isConflict = false;
                } else {
                        # switch from section editing to normal editing in edit conflict
-                       if($this->isConflict) {
+                       if ( $this->isConflict ) {
                                # Attempt merge
-                               if( $this->mergeChangesInto( $text ) ){
+                               if ( $this->mergeChangesInto( $text ) ) {
                                        // Successful merge! Maybe we should tell the user the good news?
                                        $this->isConflict = false;
                                        wfDebug( "EditPage::editForm Suppressing edit conflict, successful merge.\n" );
@@ -808,54 +931,62 @@ class EditPage {
 
                if ( $this->isConflict ) {
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_CONFLICT_DETECTED;
                }
 
                $oldtext = $this->mArticle->getContent();
 
+               // Run post-section-merge edit filter
+               if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
+                       # Error messages etc. could be handled within the hook...
+                       wfProfileOut( $fname );
+                       return self::AS_HOOK_ERROR;
+               }
+
                # Handle the user preference to force summaries here, but not for null edits
-               if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
-                       &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
-                       if( md5( $this->summary ) == $this->autoSumm ) {
+               if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp($oldtext, $text) &&
+                       !is_object( Title::newFromRedirect( $text ) ) # check if it's not a redirect
+               ) {
+                       if ( md5( $this->summary ) == $this->autoSumm ) {
                                $this->missingSummary = true;
                                wfProfileOut( $fname );
-                               return( true );
+                               return self::AS_SUMMARY_NEEDED;
                        }
                }
 
-               #And a similar thing for new sections
-               if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
+               # And a similar thing for new sections
+               if ( $this->section == 'new' && !$this->allowBlankSummary ) {
                        if (trim($this->summary) == '') {
                                $this->missingSummary = true;
                                wfProfileOut( $fname );
-                               return( true );
+                               return self::AS_SUMMARY_NEEDED;
                        }
                }
 
                # All's well
                wfProfileIn( "$fname-sectionanchor" );
                $sectionanchor = '';
-               if( $this->section == 'new' ) {
+               if ( $this->section == 'new' ) {
                        if ( $this->textbox1 == '' ) {
                                $this->missingComment = true;
-                               return true;
+                               return self::AS_TEXTBOX_EMPTY;
                        }
-                       if( $this->summary != '' ) {
-                               $sectionanchor = $this->sectionAnchor( $this->summary );
+                       if ( $this->summary != '' ) {
+                               $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
                                # This is a new section, so create a link to the new section
                                # in the revision summary.
-                               $this->summary = wfMsgForContent('newsectionsummary') . 
-                                       " [[{$this->mTitle->getPrefixedText()}#{$this->summary}|{$this->summary}]]";
+                               $cleanSummary = $wgParser->stripSectionName( $this->summary );
+                               $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
                        }
-               } elseif( $this->section != '' ) {
+               } elseif ( $this->section != '' ) {
                        # Try to get a section anchor from the section source, redirect to edited section if header found
                        # XXX: might be better to integrate this into Article::replaceSection
                        # for duplicate heading checking and maybe parsing
                        $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
                        # we can't deal with anchors, includes, html etc in the header for now,
                        # headline would need to be parsed to improve this
-                       if($hasmatch and strlen($matches[2]) > 0) {
-                               $sectionanchor = $this->sectionAnchor( $matches[2] );
+                       if ( $hasmatch and strlen($matches[2]) > 0 ) {
+                               $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
                        }
                }
                wfProfileOut( "$fname-sectionanchor" );
@@ -872,20 +1003,62 @@ class EditPage {
                if ( $this->kblength > $wgMaxArticleSize ) {
                        $this->tooBig = true;
                        wfProfileOut( $fname );
-                       return true;
+                       return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
                }
 
                # update the article here
-               if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
-                       $this->watchthis, '', $sectionanchor ) ) {
+               if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
+                       $this->watchthis, $bot, $sectionanchor ) ) {
                        wfProfileOut( $fname );
-                       return false;
+                       return self::AS_SUCCESS_UPDATE;
                } else {
                        $this->isConflict = true;
                }
                wfProfileOut( $fname );
+               return self::AS_END;
+       }
+       
+       /**
+        * Check if no edits were made by other users since
+        * the time a user started editing the page. Limit to
+        * 50 revisions for the sake of performance.
+        */
+       protected function userWasLastToEdit( $id, $edittime ) {
+               $dbw = wfGetDB( DB_MASTER );
+               $res = $dbw->select( 'revision',
+                       'rev_user',
+                       array( 
+                               'rev_page' => $this->mArticle->getId(),
+                               'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
+                       ),
+                       __METHOD__,
+                       array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
+               while( $row = $res->fetchObject() ) {
+                       if( $row->rev_user != $id ) {
+                               return false;
+                       }
+               }
                return true;
        }
+       
+       /**
+        * Check given input text against $wgSpamRegex, and return the text of the first match.
+        * @return mixed -- matching string or false
+        */
+       public static function matchSpamRegex( $text ) {
+               global $wgSpamRegex;
+               if ( $wgSpamRegex ) {
+                       // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
+                       $regexes = (array)$wgSpamRegex;
+                       foreach( $regexes as $regex ) {
+                               $matches = array();
+                               if ( preg_match( $regex, $text, $matches ) ) {
+                                       return $matches[0];
+                               }
+                       }
+               }
+               return false;
+       }
 
        /**
         * Initialise form fields in the object
@@ -893,16 +1066,35 @@ class EditPage {
         */
        function initialiseForm() {
                $this->edittime = $this->mArticle->getTimestamp();
-               $this->summary = '';
-               $this->textbox1 = $this->getContent(false);
-               if ($this->textbox1 === false) return false;
-
-               if ( !$this->mArticle->exists() && $this->mArticle->mTitle->getNamespace() == NS_MEDIAWIKI )
-                       $this->textbox1 = wfMsgWeirdKey( $this->mArticle->mTitle->getText() );
+               $this->textbox1 = $this->getContent( false );
+               if ( $this->textbox1 === false ) return false;
                wfProxyCheck();
                return true;
        }
 
+       function setHeaders() {
+               global $wgOut, $wgTitle;
+               $wgOut->setRobotPolicy( 'noindex,nofollow' );
+               if ( $this->formtype == 'preview' ) {
+                       $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
+               }
+               if ( $this->isConflict ) {
+                       $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
+               } elseif ( $this->section != '' ) {
+                       $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
+                       $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
+               } else {
+                       # Use the title defined by DISPLAYTITLE magic word when present
+                       if ( isset($this->mParserOutput)
+                        && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
+                               $title = $dt;
+                       } else {
+                               $title = $wgTitle->getPrefixedText();
+                       }
+                       $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
+               }
+       }
+
        /**
         * Send the edit form and related headers to $wgOut
         * @param $formCallback Optional callable that takes an OutputPage
@@ -910,7 +1102,14 @@ class EditPage {
         *                      near the top, for captchas and the like.
         */
        function showEditForm( $formCallback=null ) {
-               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
+               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle, $wgRequest;
+
+               # If $wgTitle is null, that means we're in API mode.
+               # Some hook probably called this function  without checking
+               # for is_null($wgTitle) first. Bail out right here so we don't
+               # do lots of work just to discard it right after.
+               if (is_null($wgTitle))
+                       return;
 
                $fname = 'EditPage::showEditForm';
                wfProfileIn( $fname );
@@ -919,149 +1118,150 @@ class EditPage {
 
                wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) ) ;
 
-               $wgOut->setRobotpolicy( 'noindex,nofollow' );
+               #need to parse the preview early so that we know which templates are used,
+               #otherwise users with "show preview after edit box" will get a blank list
+               #we parse this near the beginning so that setHeaders can do the title
+               #setting work instead of leaving it in getPreviewText
+               $previewOutput = '';
+               if ( $this->formtype == 'preview' ) {
+                       $previewOutput = $this->getPreviewText();
+               }
+
+               $this->setHeaders();
 
                # Enabled article-related sidebar, toplinks, etc.
                $wgOut->setArticleRelated( true );
 
-               if ( $this->formtype == 'preview' ) {
-                       $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
-               }
-
                if ( $this->isConflict ) {
-                       $s = wfMsg( 'editconflict', $this->mTitle->getPrefixedText() );
-                       $wgOut->setPageTitle( $s );
-                       $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
+                       $wgOut->addWikiMsg( 'explainconflict' );
 
                        $this->textbox2 = $this->textbox1;
                        $this->textbox1 = $this->getContent();
                        $this->edittime = $this->mArticle->getTimestamp();
                } else {
-
-                       if( $this->section != '' ) {
-                               if( $this->section == 'new' ) {
-                                       $s = wfMsg('editingcomment', $this->mTitle->getPrefixedText() );
-                               } else {
-                                       $s = wfMsg('editingsection', $this->mTitle->getPrefixedText() );
-                                       $matches = array();
-                                       if( !$this->summary && !$this->preview && !$this->diff ) {
-                                               preg_match( "/^(=+)(.+)\\1/mi",
-                                                       $this->textbox1,
-                                                       $matches );
-                                               if( !empty( $matches[2] ) ) {
-                                                       $this->summary = "/* ". trim($matches[2])." */ ";
-                                               }
+                       if ( $this->section != '' && $this->section != 'new' ) {
+                               $matches = array();
+                               if ( !$this->summary && !$this->preview && !$this->diff ) {
+                                       preg_match( "/^(=+)(.+)\\1/mi",
+                                               $this->textbox1,
+                                               $matches );
+                                       if ( !empty( $matches[2] ) ) {
+                                               global $wgParser;
+                                               $this->summary = "/* " .
+                                                       $wgParser->stripSectionName(trim($matches[2])) .
+                                                       " */ ";
                                        }
                                }
-                       } else {
-                               $s = wfMsg( 'editing', $this->mTitle->getPrefixedText() );
                        }
-                       $wgOut->setPageTitle( $s );
 
                        if ( $this->missingComment ) {
-                               $wgOut->addWikiText( wfMsg( 'missingcommenttext' ) );
+                               $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>',  'missingcommenttext' );
                        }
 
-                       if( $this->missingSummary && $this->section != 'new' ) {
-                               $wgOut->addWikiText( wfMsg( 'missingsummary' ) );
+                       if ( $this->missingSummary && $this->section != 'new' ) {
+                               $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
                        }
 
-                       if( $this->missingSummary && $this->section == 'new' ) {
-                               $wgOut->addWikiText( wfMsg( 'missingcommentheader' ) );
+                       if ( $this->missingSummary && $this->section == 'new' ) {
+                               $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
                        }
 
-                       if( !$this->hookError == '' ) {
+                       if ( $this->hookError !== '' ) {
                                $wgOut->addWikiText( $this->hookError );
                        }
 
                        if ( !$this->checkUnicodeCompliantBrowser() ) {
-                               $wgOut->addWikiText( wfMsg( 'nonunicodebrowser') );
+                               $wgOut->addWikiMsg( 'nonunicodebrowser' );
                        }
                        if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
                        // Let sysop know that this will make private content public if saved
-                               if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
-                                       $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
+
+                               if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
+                                       $wgOut->addWikiMsg( 'rev-deleted-text-permission' );
+                               } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
+                                       $wgOut->addWikiMsg( 'rev-deleted-text-view' );
                                }
-                               if( !$this->mArticle->mRevision->isCurrent() ) {
+
+                               if ( !$this->mArticle->mRevision->isCurrent() ) {
                                        $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
-                                       $wgOut->addWikiText( wfMsg( 'editingold' ) );
+                                       $wgOut->addWikiMsg( 'editingold' );
                                }
                        }
                }
 
-               if( wfReadOnly() ) {
-                       $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
-               } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
-                       $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
+               if ( wfReadOnly() ) {
+                       $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
+               } elseif ( $wgUser->isAnon() && $this->formtype != 'preview' ) {
+                       $wgOut->wrapWikiMsg( '<div id="mw-anon-edit-warning">$1</div>', 'anoneditwarning' );
                } else {
-                       if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
+                       if ( $this->isCssJsSubpage ) {
                                # Check the skin exists
-                               if( $this->isValidCssJsSubpage ) {
-                                       $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
+                               if ( $this->isValidCssJsSubpage ) {
+                                       if ( $this->formtype !== 'preview' ) {
+                                               $wgOut->addWikiMsg( 'usercssjsyoucanpreview' );
+                                       }
                                } else {
-                                       $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->mTitle->getSkinFromCssJsSubpage() ) );
+                                       $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
                                }
                        }
                }
 
-               if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+               $classes = array(); // Textarea CSS
+               if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
                        # Show a warning if editing an interface message
-                       $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
-               } elseif( $this->mTitle->isProtected( 'edit' ) ) {
+                       $wgOut->addWikiMsg( 'editinginterface' );
+               } elseif ( $this->mTitle->isProtected( 'edit' ) ) {
                        # Is the title semi-protected?
-                       if( $this->mTitle->isSemiProtected() ) {
-                               $notice = wfMsg( 'semiprotectedpagewarning' );
-                               if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
-                                       $notice = '';
+                       if ( $this->mTitle->isSemiProtected() ) {
+                               $noticeMsg = 'semiprotectedpagewarning';
+                               $classes[] = 'mw-textarea-sprotected';
                        } else {
-                       # Then it must be protected based on static groups (regular)
-                               $notice = wfMsg( 'protectedpagewarning' );
+                               # Then it must be protected based on static groups (regular)
+                               $noticeMsg = 'protectedpagewarning';
+                               $classes[] = 'mw-textarea-protected';
                        }
-                       $wgOut->addWikiText( $notice );
+                       $wgOut->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
+                       $wgOut->addWikiMsg( $noticeMsg );
+                       LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '', 1 );
+                       $wgOut->addHTML( "</div>\n" );
                }
                if ( $this->mTitle->isCascadeProtected() ) {
                        # Is this page under cascading protection from some source pages?
                        list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
+                       $notice = "$1\n";
                        if ( count($cascadeSources) > 0 ) {
                                # Explain, and list the titles responsible
-                               $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
                                foreach( $cascadeSources as $page ) {
                                        $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
                                }
                        }
-                       $wgOut->addWikiText( $notice );
+                       $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', count($cascadeSources) ) );
+               }
+               if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
+                       $wgOut->addWikiMsg( 'titleprotectedwarning' );
                }
 
                if ( $this->kblength === false ) {
                        $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
                }
                if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
-                       $wgOut->addWikiText( wfMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgMaxArticleSize ) );
-               } elseif( $this->kblength > 29 ) {
-                       $wgOut->addWikiText( wfMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) ) );
+                       $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
+                       $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
+                       $wgOut->addHTML( "</div>\n" );
+               } elseif ( $this->kblength > 29 ) {
+                       $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
+                       $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
+                       $wgOut->addHTML( "</div>\n" );
                }
 
-               #need to parse the preview early so that we know which templates are used,
-               #otherwise users with "show preview after edit box" will get a blank list
-               if ( $this->formtype == 'preview' ) {
-                       $previewOutput = $this->getPreviewText();
-               }
-
-               $rows = $wgUser->getIntOption( 'rows' );
-               $cols = $wgUser->getIntOption( 'cols' );
-
-               $ew = $wgUser->getOption( 'editwidth' );
-               if ( $ew ) $ew = " style=\"width:100%\"";
-               else $ew = '';
-
-               $q = 'action=submit';
+               $q = 'action='.$this->action;
                #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
-               $action = $this->mTitle->escapeLocalURL( $q );
+               $action = $wgTitle->escapeLocalURL( $q );
 
-               $summary = wfMsg('summary');
-               $subject = wfMsg('subject');
+               $summary = wfMsg( 'summary' );
+               $subject = wfMsg( 'subject' );
 
-               $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedText(),
+               $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
                                wfMsgExt('cancel', array('parseinline')) );
                $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
                $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
@@ -1069,48 +1269,48 @@ class EditPage {
                        htmlspecialchars( wfMsg( 'newwindow' ) );
 
                global $wgRightsText;
-               $copywarn = "<div id=\"editpage-copywarn\">\n" .
-                       wfMsg( $wgRightsText ? 'copyrightwarning' : 'copyrightwarning2',
+               if ( $wgRightsText ) {
+                       $copywarnMsg = array( 'copyrightwarning',
                                '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
-                               $wgRightsText ) . "\n</div>";
+                               $wgRightsText );
+               } else {
+                       $copywarnMsg = array( 'copyrightwarning2',
+                               '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
+               }
 
-               if( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
+               if ( $wgUser->getOption('showtoolbar') and !$this->isCssJsSubpage ) {
                        # prepare toolbar for edit buttons
-                       $toolbar = $this->getEditToolbar();
+                       $toolbar = EditPage::getEditToolbar();
                } else {
                        $toolbar = '';
                }
 
                // activate checkboxes if user wants them to be always active
-               if( !$this->preview && !$this->diff ) {
+               if ( !$this->preview && !$this->diff ) {
                        # Sort out the "watch" checkbox
-                       if( $wgUser->getOption( 'watchdefault' ) ) {
+                       if ( $wgUser->getOption( 'watchdefault' ) ) {
                                # Watch all edits
                                $this->watchthis = true;
-                       } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
+                       } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
                                # Watch creations
                                $this->watchthis = true;
-                       } elseif( $this->mTitle->userIsWatching() ) {
+                       } elseif ( $this->mTitle->userIsWatching() ) {
                                # Already watched
                                $this->watchthis = true;
                        }
+                       
+                       # May be overriden by request parameters
+                       if( $wgRequest->getBool( 'watchthis' ) ) {
+                               $this->watchthis = true;
+                       }
 
-                       if( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
+                       if ( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
                }
 
                $wgOut->addHTML( $this->editFormPageTop );
 
                if ( $wgUser->getOption( 'previewontop' ) ) {
-
-                       if ( 'preview' == $this->formtype ) {
-                               $this->showPreview( $previewOutput );
-                       } else {
-                               $wgOut->addHTML( '<div id="wikiPreview"></div>' );
-                       }
-
-                       if ( 'diff' == $this->formtype ) {
-                               $this->showDiff();
-                       }
+                       $this->displayPreviewArea( $previewOutput, true );
                }
 
 
@@ -1119,44 +1319,65 @@ class EditPage {
                # if this is a comment, show a subject line at the top, which is also the edit summary.
                # Otherwise, show a summary field at the bottom
                $summarytext = htmlspecialchars( $wgContLang->recodeForEdit( $this->summary ) ); # FIXME
-               if( $this->section == 'new' ) {
-                       $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
-                       $editsummary = '';
-                       $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
+
+               # If a blank edit summary was previously provided, and the appropriate
+               # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
+               # user being bounced back more than once in the event that a summary
+               # is not required.
+               #####
+               # For a bit more sophisticated detection of blank summaries, hash the
+               # automatic one and pass that in the hidden field wpAutoSummary.
+               $summaryhiddens =  '';
+               if ( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
+               $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
+               $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
+               if ( $this->section == 'new' ) {
+                       $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}</label></span>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
+                       $editsummary = "<div class='editOptions'>\n";
+                       global $wgParser;
+                       $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
+                       $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">". wfMsg('subject-preview') . $sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
                        $summarypreview = '';
                } else {
                        $commentsubject = '';
-                       $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
-                       $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
+                       $editsummary="<div class='editOptions'>\n<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}</label></span>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
+                       $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">". wfMsg('summary-preview') .$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
                        $subjectpreview = '';
                }
 
                # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
-               if( !$this->preview && !$this->diff ) {
+               if ( !$this->preview && !$this->diff ) {
                        $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
                }
-               $templates = ($this->preview || $this->section != '') ? $this->mPreviewTemplates : $this->mArticle->getUsedTemplates();
+               $templates = $this->getTemplates();
                $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
 
+               $hiddencats = $this->mArticle->getHiddenCategories();
+               $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
+
                global $wgUseMetadataEdit ;
                if ( $wgUseMetadataEdit ) {
                        $metadata = $this->mMetaData ;
                        $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
                        $top = wfMsgWikiHtml( 'metadata_help' );
+                       /* ToDo: Replace with clean code */
+                       $ew = $wgUser->getOption( 'editwidth' );
+                       if ( $ew ) $ew = " style=\"width:100%\"";
+                       else $ew = '';
+                       $cols = $wgUser->getIntOption( 'cols' );
+                       /* /ToDo */
                        $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
                }
                else $metadata = "" ;
 
-               $hidden = '';
                $recreate = '';
-               if ($this->deletedSinceEdit) {
+               if ( $this->wasDeletedSinceLastEdit() ) {
                        if ( 'save' != $this->formtype ) {
-                               $wgOut->addWikiText( wfMsg('deletedwhileediting'));
+                               $wgOut->addWikiMsg('deletedwhileediting');
                        } else {
                                // Hide the toolbar and edit area, use can click preview to get it back
                                // Add an confirmation checkbox and explanation.
                                $toolbar = '';
-                               $hidden = 'type="hidden" style="display:none;"';
                                $recreate = $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ));
                                $recreate .=
                                        "<br /><input tabindex='1' type='checkbox' value='1' name='wpRecreate' id='wpRecreate' />".
@@ -1166,7 +1387,7 @@ class EditPage {
 
                $tabindex = 2;
 
-               $checkboxes = self::getCheckboxes( $tabindex, $sk,
+               $checkboxes = $this->getCheckboxes( $tabindex, $sk,
                        array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
 
                $checkboxhtml = implode( $checkboxes, "\n" );
@@ -1183,40 +1404,34 @@ class EditPage {
 END
 );
 
-               if( is_callable( $formCallback ) ) {
+               if ( is_callable( $formCallback ) ) {
                        call_user_func_array( $formCallback, array( &$wgOut ) );
                }
 
                wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
 
                // Put these up at the top to ensure they aren't lost on early form submission
-               $wgOut->addHTML( "
-<input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
-<input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
-<input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
-<input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
+               $this->showFormBeforeText();
 
                $wgOut->addHTML( <<<END
-$recreate
+{$recreate}
 {$commentsubject}
 {$subjectpreview}
-<textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
-cols='{$cols}'{$ew} $hidden>
+{$this->editFormTextBeforeContent}
 END
-. htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
-"
-</textarea>
-               " );
+);
+               $this->showTextbox1( $classes );
 
-               $wgOut->addWikiText( $copywarn );
-               $wgOut->addHTML( $this->editFormTextAfterWarn );
-               $wgOut->addHTML( "
+               $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
+               $wgOut->addHTML( <<<END
+{$this->editFormTextAfterWarn}
 {$metadata}
 {$editsummary}
 {$summarypreview}
 {$checkboxhtml}
 {$safemodehtml}
-");
+END
+);
 
                $wgOut->addHTML(
 "<div class='editButtons'>
@@ -1225,18 +1440,6 @@ END
 </div><!-- editButtons -->
 </div><!-- editOptions -->");
 
-               $wgOut->addHtml( '<div class="mw-editTools">' );
-               $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
-               $wgOut->addHtml( '</div>' );
-
-               $wgOut->addHTML( $this->editFormTextAfterTools );
-
-               $wgOut->addHTML( "
-<div class='templatesUsed'>
-{$formattedtemplates}
-</div>
-" );
-
                /**
                 * To make it harder for someone to slip a user a page
                 * which submits an edit form to the wiki without their
@@ -1252,48 +1455,109 @@ END
                $token = htmlspecialchars( $wgUser->editToken() );
                $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 
+               $this->showEditTools();
 
-               # If a blank edit summary was previously provided, and the appropriate
-               # user preference is active, pass a hidden tag here. This will stop the
-               # user being bounced back more than once in the event that a summary
-               # is not required.
-               if( $this->missingSummary ) {
-                       $wgOut->addHTML( "<input type=\"hidden\" name=\"wpIgnoreBlankSummary\" value=\"1\" />\n" );
-               }
-
-               # For a bit more sophisticated detection of blank summaries, hash the
-               # automatic one and pass that in a hidden field.
-               $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
-               $wgOut->addHtml( wfHidden( 'wpAutoSummary', $autosumm ) );
+               $wgOut->addHTML( <<<END
+{$this->editFormTextAfterTools}
+<div class='templatesUsed'>
+{$formattedtemplates}
+</div>
+<div class='hiddencats'>
+{$formattedhiddencats}
+</div>
+END
+);
 
-               if ( $this->isConflict ) {
-                       $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
+               if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
+                       $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
 
                        $de = new DifferenceEngine( $this->mTitle );
                        $de->setText( $this->textbox2, $this->textbox1 );
                        $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 
-                       $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
-                       $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
-                               . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
+                       $wgOut->wrapWikiMsg( '==$1==', "yourtext" );
+                       $this->showTextbox2();
                }
                $wgOut->addHTML( $this->editFormTextBottom );
                $wgOut->addHTML( "</form>\n" );
                if ( !$wgUser->getOption( 'previewontop' ) ) {
+                       $this->displayPreviewArea( $previewOutput, false );
+               }
 
-                       if ( $this->formtype == 'preview') {
-                               $this->showPreview( $previewOutput );
-                       } else {
-                               $wgOut->addHTML( '<div id="wikiPreview"></div>' );
-                       }
+               wfProfileOut( $fname );
+       }
 
-                       if ( $this->formtype == 'diff') {
-                               $this->showDiff();
-                       }
+       protected function showFormBeforeText() {
+               global $wgOut;
+               $wgOut->addHTML( "
+<input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
+<input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
+<input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
+<input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
+       }
+       
+       protected function showTextbox1( $classes ) {
+               $attribs = array( 'tabindex' => 1 );
+               
+               if ( $this->wasDeletedSinceLastEdit() )
+                       $attribs['type'] = 'hidden';
+               if ( !empty($classes) )
+                       $attribs['class'] = implode(' ',$classes);
+               
+               $this->showTextbox( $this->textbox1, 'wpTextbox1', $attribs );
+       }
+       
+       protected function showTextbox2() {
+               $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
+       }
+       
+       protected function showTextbox( $content, $name, $attribs = array() ) {
+               global $wgOut, $wgUser;
+               
+               $wikitext = $this->safeUnicodeOutput( $content );
+               if ( $wikitext !== '' ) {
+                       // Ensure there's a newline at the end, otherwise adding lines
+                       // is awkward.
+                       // But don't add a newline if the ext is empty, or Firefox in XHTML
+                       // mode will show an extra newline. A bit annoying.
+                       $wikitext .= "\n";
+               }
+               
+               $attribs['accesskey'] = ',';
+               $attribs['id'] = $name;
+               
+               if ( $wgUser->getOption( 'editwidth' ) )
+                       $attribs['style'] = 'width: 100%';
+               
+               $wgOut->addHTML( Xml::textarea(
+                       $name,
+                       $wikitext,
+                       $wgUser->getIntOption( 'cols' ), $wgUser->getIntOption( 'rows' ),
+                       $attribs ) );
+       }
 
+       protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
+               global $wgOut;
+               $classes = array();
+               if ( $isOnTop )
+                       $classes[] = 'ontop';
+
+               $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
+
+               if ( $this->formtype != 'preview' )
+                       $attribs['style'] = 'display: none;';
+
+               $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
+
+               if ( $this->formtype == 'preview' ) {
+                       $this->showPreview( $previewOutput );
                }
 
-               wfProfileOut( $fname );
+               $wgOut->addHTML( '</div>' );
+
+               if ( $this->formtype == 'diff') {
+                       $this->showDiff();
+               }
        }
 
        /**
@@ -1302,19 +1566,18 @@ END
         *
         * @param string $text The HTML to be output for the preview.
         */
-       private function showPreview( $text ) {
+       protected function showPreview( $text ) {
                global $wgOut;
-
-               $wgOut->addHTML( '<div id="wikiPreview">' );
-               if($this->mTitle->getNamespace() == NS_CATEGORY) {
+               if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
                        $this->mArticle->openShowCategory();
                }
+               # This hook seems slightly odd here, but makes things more
+               # consistent for extensions.
                wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
                $wgOut->addHTML( $text );
-               if($this->mTitle->getNamespace() == NS_CATEGORY) {
+               if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
                        $this->mArticle->closeShowCategory();
                }
-               $wgOut->addHTML( '</div>' );
        }
 
        /**
@@ -1328,21 +1591,24 @@ END
         * of the preview button
         */
        function doLivePreviewScript() {
-               global $wgStylePath, $wgJsMimeType, $wgStyleVersion, $wgOut, $wgTitle;
-               $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
-                       htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
-                       '"></script>' . "\n" );
-               $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
-               return "return !livePreview(" .
-                       "getElementById('wikiPreview')," .
+               global $wgOut, $wgTitle;
+               $wgOut->addScriptFile( 'preview.js' );
+               $liveAction = $wgTitle->getLocalUrl( "action={$this->action}&wpPreview=true&live=true" );
+               return "return !lpDoPreview(" .
                        "editform.wpTextbox1.value," .
                        '"' . $liveAction . '"' . ")";
        }
 
+       protected function showEditTools() {
+               global $wgOut;
+               $wgOut->addHTML( '<div class="mw-editTools">' );
+               $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
+               $wgOut->addHTML( '</div>' );
+       }
+
        function getLastDelete() {
                $dbr = wfGetDB( DB_SLAVE );
-               $fname = 'EditPage::getLastDelete';
-               $res = $dbr->select(
+               $data = $dbr->selectRow(
                        array( 'logging', 'user' ),
                        array( 'log_type',
                               'log_action',
@@ -1358,48 +1624,36 @@ END
                               'log_type' => 'delete',
                               'log_action' => 'delete',
                               'user_id=log_user' ),
-                       $fname,
+                       __METHOD__,
                        array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' ) );
 
-               if($dbr->numRows($res) == 1) {
-                       while ( $x = $dbr->fetchObject ( $res ) )
-                               $data = $x;
-                       $dbr->freeResult ( $res ) ;
-               } else {
-                       $data = null;
-               }
                return $data;
        }
 
        /**
-        * @todo document
+        * Get the rendered text for previewing.
+        * @return string
         */
        function getPreviewText() {
-               global $wgOut, $wgUser, $wgTitle, $wgParser;
+               global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang, $wgMessageCache;
 
-               $fname = 'EditPage::getPreviewText';
-               wfProfileIn( $fname );
+               wfProfileIn( __METHOD__ );
 
                if ( $this->mTriedSave && !$this->mTokenOk ) {
                        if ( $this->mTokenOkExceptSuffix ) {
-                               $msg = 'token_suffix_mismatch';
+                               $note = wfMsg( 'token_suffix_mismatch' );
                        } else {
-                               $msg = 'session_fail_preview';
+                               $note = wfMsg( 'session_fail_preview' );
                        }
                } else {
-                       $msg = 'previewnote';
-               }
-               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
-                       "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
-               if ( $this->isConflict ) {
-                       $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+                       $note = wfMsg( 'previewnote' );
                }
 
                $parserOptions = ParserOptions::newFromUser( $wgUser );
                $parserOptions->setEditSection( false );
 
                global $wgRawHtml;
-               if( $wgRawHtml && !$this->mTokenOk ) {
+               if ( $wgRawHtml && !$this->mTokenOk ) {
                        // Could be an offsite preview attempt. This is very unsafe if
                        // HTML is enabled, as it could be an attack.
                        return $wgOut->parse( "<div class='previewnote'>" .
@@ -1410,42 +1664,71 @@ END
                # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 
                if ( $this->isCssJsSubpage ) {
-                       if(preg_match("/\\.css$/", $wgTitle->getText() ) ) {
+                       if (preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('usercsspreview');
-                       } else if(preg_match("/\\.js$/", $wgTitle->getText() ) ) {
+                       } else if (preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('userjspreview');
                        }
                        $parserOptions->setTidy(true);
-                       $parserOutput = $wgParser->parse( $previewtext , $wgTitle, $parserOptions );
-                       $wgOut->addHTML( $parserOutput->mText );
-                       wfProfileOut( $fname );
-                       return $previewhead;
+                       $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
+                       $previewHTML = $parserOutput->mText;
+               } elseif ( $rt = Title::newFromRedirect( $this->textbox1 ) ) {
+                       $previewHTML = $this->mArticle->viewRedirect( $rt, false );
                } else {
                        $toparse = $this->textbox1;
 
                        # If we're adding a comment, we need to show the
                        # summary as the headline
-                       if($this->section=="new" && $this->summary!="") {
+                       if ( $this->section=="new" && $this->summary!="" ) {
                                $toparse="== {$this->summary} ==\n\n".$toparse;
                        }
 
-                       if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
+                       if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
+
+                       // Parse mediawiki messages with correct target language
+                       if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
+                               list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
+                               $obj = wfGetLangObj( $lang );
+                               $parserOptions->setTargetLanguage( $obj );
+                       }
+
+
                        $parserOptions->setTidy(true);
-                       $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
-                                       $wgTitle, $parserOptions );
+                       $parserOptions->enableLimitReport();
+                       $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
+                                       $this->mTitle, $parserOptions );
 
                        $previewHTML = $parserOutput->getText();
+                       $this->mParserOutput = $parserOutput;
                        $wgOut->addParserOutputNoText( $parserOutput );
-                       
-                       # ParserOutput might have altered the page title, so reset it
-                       $wgOut->setPageTitle( wfMsg( 'editing', $this->mTitle->getPrefixedText() ) );                   
 
-                       foreach ( $parserOutput->getTemplates() as $ns => $template)
-                               foreach ( array_keys( $template ) as $dbk)
-                                       $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
+                       if ( count( $parserOutput->getWarnings() ) ) {
+                               $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
+                       }
+               }
 
-                       wfProfileOut( $fname );
-                       return $previewhead . $previewHTML;
+               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
+                       "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
+               if ( $this->isConflict ) {
+                       $previewhead .='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+               }
+
+               wfProfileOut( __METHOD__ );
+               return $previewhead . $previewHTML;
+       }
+       
+       function getTemplates() {
+               if ( $this->preview || $this->section != '' ) {
+                       $templates = array();
+                       if ( !isset($this->mParserOutput) ) return $templates;
+                       foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
+                               foreach( array_keys( $template ) as $dbk ) {
+                                       $templates[] = Title::makeTitle($ns, $dbk);
+                               }
+                       }
+                       return $templates;
+               } else {
+                       return $this->mArticle->getUsedTemplates();
                }
        }
 
@@ -1459,20 +1742,22 @@ END
                # If the user made changes, preserve them when showing the markup
                # (This happens when a user is blocked during edit, for instance)
                $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
-               if( $first ) {
+               if ( $first ) {
                        $source = $this->mTitle->exists() ? $this->getContent() : false;
                } else {
                        $source = $this->textbox1;
                }
 
                # Spit out the source or the user's modified version
-               if( $source !== false ) {
-                       $rows = $wgUser->getOption( 'rows' );
-                       $cols = $wgUser->getOption( 'cols' );
+               if ( $source !== false ) {
+                       $rows = $wgUser->getIntOption( 'rows' );
+                       $cols = $wgUser->getIntOption( 'cols' );
                        $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
-                       $wgOut->addHtml( '<hr />' );
-                       $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
-                       $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
+                       $wgOut->addHTML( '<hr />' );
+                       $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
+                       # Why we don't use Xml::element here?
+                       # Is it because if $source is '', it returns <textarea />?
+                       $wgOut->addHTML( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
                }
        }
 
@@ -1480,49 +1765,33 @@ END
         * Produce the stock "please login to edit pages" page
         */
        function userNotLoggedInPage() {
-               global $wgUser, $wgOut;
+               global $wgUser, $wgOut, $wgTitle;
                $skin = $wgUser->getSkin();
 
                $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
-               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->mTitle->getPrefixedUrl() );
+               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
 
                $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
-               $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
-               $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
-       }
-
-       /**
-        * Creates a basic error page which informs the user that
-        * they have to validate their email address before being
-        * allowed to edit.
-        */
-       function userNotConfirmedPage() {
-               global $wgOut;
-
-               $wgOut->setPageTitle( wfMsg( 'confirmedittitle' ) );
-               $wgOut->setRobotPolicy( 'noindex,nofollow' );
-               $wgOut->setArticleRelated( false );
-
-               $wgOut->addWikiText( wfMsg( 'confirmedittext' ) );
-               $wgOut->returnToMain( false );
+               $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
         * Creates a basic error page which informs the user that
-        * they have attempted to edit a nonexistant section.
+        * they have attempted to edit a nonexistent section.
         */
        function noSuchSectionPage() {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
-               $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
-               $wgOut->returnToMain( false, $this->mTitle->getPrefixedUrl() );
+               $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1531,17 +1800,19 @@ END
         * @param $match Text which triggered one or more filters
         */
        function spamPage( $match = false ) {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
-               $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
+               $wgOut->addHTML( '<div id="spamprotected">' );
+               $wgOut->addWikiMsg( 'spamprotectiontext' );
                if ( $match )
-                       $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
+                       $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
+               $wgOut->addHTML( '</div>' );
 
-               $wgOut->returnToMain( false );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1555,9 +1826,8 @@ END
                $db = wfGetDB( DB_MASTER );
 
                // This is the revision the editor started from
-               $baseRevision = Revision::loadFromTimestamp(
-                       $db, $this->mArticle->mTitle, $this->edittime );
-               if( is_null( $baseRevision ) ) {
+               $baseRevision = $this->getBaseRevision();
+               if ( is_null( $baseRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
                }
@@ -1565,15 +1835,15 @@ END
 
                // The current state, we want to merge updates into it
                $currentRevision =  Revision::loadFromTitle(
-                       $db, $this->mArticle->mTitle );
-               if( is_null( $currentRevision ) ) {
+                       $db, $this->mTitle );
+               if ( is_null( $currentRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
                }
                $currentText = $currentRevision->getText();
 
                $result = '';
-               if( wfMerge( $baseText, $editText, $currentText, $result ) ){
+               if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
                        $editText = $result;
                        wfProfileOut( $fname );
                        return true;
@@ -1592,7 +1862,7 @@ END
         */
        function checkUnicodeCompliantBrowser() {
                global $wgBrowserBlackList;
-               if( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
+               if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
                        // No User-Agent header sent? Trust it by default...
                        return true;
                }
@@ -1605,6 +1875,14 @@ END
                return true;
        }
 
+       /**
+        * @deprecated use $wgParser->stripSectionName()
+        */
+       function pseudoParseSectionAnchor( $text ) {
+               global $wgParser;
+               return $wgParser->stripSectionName( $text );
+       }
+
        /**
         * Format an anchor fragment as it would appear for a given section name
         * @param string $text
@@ -1612,28 +1890,19 @@ END
         * @private
         */
        function sectionAnchor( $text ) {
-               $headline = Sanitizer::decodeCharReferences( $text );
-               # strip out HTML
-               $headline = preg_replace( '/<.*?' . '>/', '', $headline );
-               $headline = trim( $headline );
-               $sectionanchor = '#' . urlencode( str_replace( ' ', '_', $headline ) );
-               $replacearray = array(
-                       '%3A' => ':',
-                       '%' => '.'
-               );
-               return str_replace(
-                       array_keys( $replacearray ),
-                       array_values( $replacearray ),
-                       $sectionanchor );
+               global $wgParser;
+               return $wgParser->guessSectionNameFromWikiText( $text );
        }
 
        /**
         * Shows a bulletin board style toolbar for common editing functions.
         * It can be disabled in the user preferences.
-        * The necessary JavaScript code can be found in style/wikibits.js.
+        * The necessary JavaScript code can be found in skins/common/edit.js.
+        * 
+        * @return string
         */
-       function getEditToolbar() {
-               global $wgStylePath, $wgContLang, $wgJsMimeType;
+       static function getEditToolbar() {
+               global $wgStylePath, $wgContLang, $wgLang, $wgJsMimeType;
 
                /**
                 * toolarray an array of arrays which each include the filename of
@@ -1647,115 +1916,126 @@ END
                 * sure these keys are not defined on the edit page.
                 */
                $toolarray = array(
-                       array(  'image' => 'button_bold.png',
-                               'id'    => 'mw-editbutton-bold',
-                               'open'  => '\\\'\\\'\\\'',
-                               'close' => '\\\'\\\'\\\'',
-                               'sample'=> wfMsg('bold_sample'),
-                               'tip'   => wfMsg('bold_tip'),
-                               'key'   => 'B'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-bold'),
+                               'id'     => 'mw-editbutton-bold',
+                               'open'   => '\'\'\'',
+                               'close'  => '\'\'\'',
+                               'sample' => wfMsg('bold_sample'),
+                               'tip'    => wfMsg('bold_tip'),
+                               'key'    => 'B'
                        ),
-                       array(  'image' => 'button_italic.png',
-                               'id'    => 'mw-editbutton-italic',
-                               'open'  => '\\\'\\\'',
-                               'close' => '\\\'\\\'',
-                               'sample'=> wfMsg('italic_sample'),
-                               'tip'   => wfMsg('italic_tip'),
-                               'key'   => 'I'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-italic'),
+                               'id'     => 'mw-editbutton-italic',
+                               'open'   => '\'\'',
+                               'close'  => '\'\'',
+                               'sample' => wfMsg('italic_sample'),
+                               'tip'    => wfMsg('italic_tip'),
+                               'key'    => 'I'
                        ),
-                       array(  'image' => 'button_link.png',
-                               'id'    => 'mw-editbutton-link',
-                               'open'  => '[[',
-                               'close' => ']]',
-                               'sample'=> wfMsg('link_sample'),
-                               'tip'   => wfMsg('link_tip'),
-                               'key'   => 'L'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-link'),
+                               'id'     => 'mw-editbutton-link',
+                               'open'   => '[[',
+                               'close'  => ']]',
+                               'sample' => wfMsg('link_sample'),
+                               'tip'    => wfMsg('link_tip'),
+                               'key'    => 'L'
                        ),
-                       array(  'image' => 'button_extlink.png',
-                               'id'    => 'mw-editbutton-extlink',
-                               'open'  => '[',
-                               'close' => ']',
-                               'sample'=> wfMsg('extlink_sample'),
-                               'tip'   => wfMsg('extlink_tip'),
-                               'key'   => 'X'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-extlink'),
+                               'id'     => 'mw-editbutton-extlink',
+                               'open'   => '[',
+                               'close'  => ']',
+                               'sample' => wfMsg('extlink_sample'),
+                               'tip'    => wfMsg('extlink_tip'),
+                               'key'    => 'X'
                        ),
-                       array(  'image' => 'button_headline.png',
-                               'id'    => 'mw-editbutton-headline',
-                               'open'  => "\\n== ",
-                               'close' => " ==\\n",
-                               'sample'=> wfMsg('headline_sample'),
-                               'tip'   => wfMsg('headline_tip'),
-                               'key'   => 'H'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-headline'),
+                               'id'     => 'mw-editbutton-headline',
+                               'open'   => "\n== ",
+                               'close'  => " ==\n",
+                               'sample' => wfMsg('headline_sample'),
+                               'tip'    => wfMsg('headline_tip'),
+                               'key'    => 'H'
                        ),
-                       array(  'image' => 'button_image.png',
-                               'id'    => 'mw-editbutton-image',
-                               'open'  => '[['.$wgContLang->getNsText(NS_IMAGE).":",
-                               'close' => ']]',
-                               'sample'=> wfMsg('image_sample'),
-                               'tip'   => wfMsg('image_tip'),
-                               'key'   => 'D'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-image'),
+                               'id'     => 'mw-editbutton-image',
+                               'open'   => '[['.$wgContLang->getNsText(NS_FILE).':',
+                               'close'  => ']]',
+                               'sample' => wfMsg('image_sample'),
+                               'tip'    => wfMsg('image_tip'),
+                               'key'    => 'D'
                        ),
-                       array(  'image' => 'button_media.png',
-                               'id'    => 'mw-editbutton-media',
-                               'open'  => '[['.$wgContLang->getNsText(NS_MEDIA).':',
-                               'close' => ']]',
-                               'sample'=> wfMsg('media_sample'),
-                               'tip'   => wfMsg('media_tip'),
-                               'key'   => 'M'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-media'),
+                               'id'     => 'mw-editbutton-media',
+                               'open'   => '[['.$wgContLang->getNsText(NS_MEDIA).':',
+                               'close'  => ']]',
+                               'sample' => wfMsg('media_sample'),
+                               'tip'    => wfMsg('media_tip'),
+                               'key'    => 'M'
                        ),
-                       array(  'image' => 'button_math.png',
-                               'id'    => 'mw-editbutton-math',
-                               'open'  => "<math>",
-                               'close' => "<\\/math>",
-                               'sample'=> wfMsg('math_sample'),
-                               'tip'   => wfMsg('math_tip'),
-                               'key'   => 'C'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-math'),
+                               'id'     => 'mw-editbutton-math',
+                               'open'   => "<math>",
+                               'close'  => "</math>",
+                               'sample' => wfMsg('math_sample'),
+                               'tip'    => wfMsg('math_tip'),
+                               'key'    => 'C'
                        ),
-                       array(  'image' => 'button_nowiki.png',
-                               'id'    => 'mw-editbutton-nowiki',
-                               'open'  => "<nowiki>",
-                               'close' => "<\\/nowiki>",
-                               'sample'=> wfMsg('nowiki_sample'),
-                               'tip'   => wfMsg('nowiki_tip'),
-                               'key'   => 'N'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-nowiki'),
+                               'id'     => 'mw-editbutton-nowiki',
+                               'open'   => "<nowiki>",
+                               'close'  => "</nowiki>",
+                               'sample' => wfMsg('nowiki_sample'),
+                               'tip'    => wfMsg('nowiki_tip'),
+                               'key'    => 'N'
                        ),
-                       array(  'image' => 'button_sig.png',
-                               'id'    => 'mw-editbutton-signature',
-                               'open'  => '--~~~~',
-                               'close' => '',
-                               'sample'=> '',
-                               'tip'   => wfMsg('sig_tip'),
-                               'key'   => 'Y'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-sig'),
+                               'id'     => 'mw-editbutton-signature',
+                               'open'   => '--~~~~',
+                               'close'  => '',
+                               'sample' => '',
+                               'tip'    => wfMsg('sig_tip'),
+                               'key'    => 'Y'
                        ),
-                       array(  'image' => 'button_hr.png',
-                               'id'    => 'mw-editbutton-hr',
-                               'open'  => "\\n----\\n",
-                               'close' => '',
-                               'sample'=> '',
-                               'tip'   => wfMsg('hr_tip'),
-                               'key'   => 'R'
+                       array(
+                               'image'  => $wgLang->getImageFile('button-hr'),
+                               'id'     => 'mw-editbutton-hr',
+                               'open'   => "\n----\n",
+                               'close'  => '',
+                               'sample' => '',
+                               'tip'    => wfMsg('hr_tip'),
+                               'key'    => 'R'
                        )
                );
                $toolbar = "<div id='toolbar'>\n";
                $toolbar.="<script type='$wgJsMimeType'>\n/*<![CDATA[*/\n";
 
                foreach($toolarray as $tool) {
+                       $params = array(
+                               $image = $wgStylePath.'/common/images/'.$tool['image'],
+                               // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
+                               // Older browsers show a "speedtip" type message only for ALT.
+                               // Ideally these should be different, realistically they
+                               // probably don't need to be.
+                               $tip = $tool['tip'],
+                               $open = $tool['open'],
+                               $close = $tool['close'],
+                               $sample = $tool['sample'],
+                               $cssId = $tool['id'],
+                       );
 
-                       $cssId = $tool['id'];
-                       $image=$wgStylePath.'/common/images/'.$tool['image'];
-                       $open=$tool['open'];
-                       $close=$tool['close'];
-                       $sample = wfEscapeJsString( $tool['sample'] );
-
-                       // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
-                       // Older browsers show a "speedtip" type message only for ALT.
-                       // Ideally these should be different, realistically they
-                       // probably don't need to be.
-                       $tip = wfEscapeJsString( $tool['tip'] );
-
-                       #$key = $tool["key"];
-
-                       $toolbar.="addButton('$image','$tip','$open','$close','$sample','$cssId');\n";
+                       $paramList = implode( ',',
+                               array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
+                       $toolbar.="addButton($paramList);\n";
                }
 
                $toolbar.="/*]]>*/\n</script>";
@@ -1774,7 +2054,7 @@ END
         *
         * @return array
         */
-       public static function getCheckboxes( &$tabindex, $skin, $checked ) {
+       public function getCheckboxes( &$tabindex, $skin, $checked ) {
                global $wgUser;
 
                $checkboxes = array();
@@ -1789,7 +2069,7 @@ END
                        );
                        $checkboxes['minor'] =
                                Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
-                               "&nbsp;<label for='wpMinoredit'".$skin->tooltipAndAccesskey('minoredit').">{$minorLabel}</label>";
+                               "&nbsp;<label for='wpMinoredit'".$skin->tooltip('minoredit', 'withaccess').">{$minorLabel}</label>";
                }
 
                $watchLabel = wfMsgExt('watchthis', array('parseinline'));
@@ -1802,8 +2082,9 @@ END
                        );
                        $checkboxes['watch'] =
                                Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
-                               "&nbsp;<label for='wpWatchthis'".$skin->tooltipAndAccesskey('watch').">{$watchLabel}</label>";
+                               "&nbsp;<label for='wpWatchthis'".$skin->tooltip('watch', 'withaccess').">{$watchLabel}</label>";
                }
+               wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
                return $checkboxes;
        }
 
@@ -1829,7 +2110,7 @@ END
                        'accesskey' => wfMsg('accesskey-save'),
                        'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
                );
-               $buttons['save'] = wfElement('input', $temp, '');
+               $buttons['save'] = Xml::element('input', $temp, '');
 
                ++$tabindex; // use the same for preview and live preview
                if ( $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) ) {
@@ -1843,7 +2124,7 @@ END
                                'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
                                'style'     => 'display: none;',
                        );
-                       $buttons['preview'] = wfElement('input', $temp, '');
+                       $buttons['preview'] = Xml::element('input', $temp, '');
 
                        $temp = array(
                                'id'        => 'wpLivePreview',
@@ -1855,7 +2136,7 @@ END
                                'title'     => '',
                                'onclick'   => $this->doLivePreviewScript(),
                        );
-                       $buttons['live'] = wfElement('input', $temp, '');
+                       $buttons['live'] = Xml::element('input', $temp, '');
                } else {
                        $temp = array(
                                'id'        => 'wpPreview',
@@ -1866,7 +2147,7 @@ END
                                'accesskey' => wfMsg('accesskey-preview'),
                                'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
                        );
-                       $buttons['preview'] = wfElement('input', $temp, '');
+                       $buttons['preview'] = Xml::element('input', $temp, '');
                        $buttons['live'] = '';
                }
 
@@ -1879,8 +2160,9 @@ END
                        'accesskey' => wfMsg('accesskey-diff'),
                        'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
                );
-               $buttons['diff'] = wfElement('input', $temp, '');
+               $buttons['diff'] = Xml::element('input', $temp, '');
 
+               wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
                return $buttons;
        }
 
@@ -1902,12 +2184,15 @@ END
                header( 'Content-type: text/xml; charset=utf-8' );
                header( 'Cache-control: no-cache' );
 
+               $previewText = $this->getPreviewText();
+               #$categories = $skin->getCategoryLinks();
+
                $s =
                '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
-               Xml::openElement( 'livepreview' ) .
-               Xml::element( 'preview', null, $this->getPreviewText() ) .
-               Xml::element( 'br', array( 'style' => 'clear: both;' ) ) .
-               Xml::closeElement( 'livepreview' );
+               Xml::tags( 'livepreview', null,
+                       Xml::element( 'preview', null, $previewText )
+                       #.      Xml::element( 'category', null, $categories )
+               );
                echo $s;
        }
 
@@ -1936,7 +2221,7 @@ END
                }
 
                global $wgOut;
-               $wgOut->addHtml( '<div id="wikiDiff">' . $difftext . '</div>' );
+               $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
        }
 
        /**
@@ -1993,20 +2278,20 @@ END
                $working = 0;
                for( $i = 0; $i < strlen( $invalue ); $i++ ) {
                        $bytevalue = ord( $invalue{$i} );
-                       if( $bytevalue <= 0x7F ) { //0xxx xxxx
+                       if ( $bytevalue <= 0x7F ) { //0xxx xxxx
                                $result .= chr( $bytevalue );
                                $bytesleft = 0;
-                       } elseif( $bytevalue <= 0xBF ) { //10xx xxxx
+                       } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
                                $working = $working << 6;
                                $working += ($bytevalue & 0x3F);
                                $bytesleft--;
-                               if( $bytesleft <= 0 ) {
+                               if ( $bytesleft <= 0 ) {
                                        $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
                                }
-                       } elseif( $bytevalue <= 0xDF ) { //110x xxxx
+                       } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
                                $working = $bytevalue & 0x1F;
                                $bytesleft = 1;
-                       } elseif( $bytevalue <= 0xEF ) { //1110 xxxx
+                       } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
                                $working = $bytevalue & 0x0F;
                                $bytesleft = 2;
                        } else { //1111 0xxx
@@ -2029,7 +2314,7 @@ END
        function unmakesafe( $invalue ) {
                $result = "";
                for( $i = 0; $i < strlen( $invalue ); $i++ ) {
-                       if( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
+                       if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
                                $i += 3;
                                $hexstring = "";
                                do {
@@ -2040,7 +2325,7 @@ END
                                // Do some sanity checks. These aren't needed for reversability,
                                // but should help keep the breakage down if the editor
                                // breaks one of the entities whilst editing.
-                               if ((substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6)) {
+                               if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
                                        $codepoint = hexdec($hexstring);
                                        $result .= codepointToUtf8( $codepoint );
                                } else {
@@ -2057,34 +2342,123 @@ END
        function noCreatePermission() {
                global $wgOut;
                $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
-               $wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
+               $wgOut->addWikiMsg( 'nocreatetext' );
        }
-       
+
        /**
         * If there are rows in the deletion log for this page, show them,
         * along with a nice little note for the user
         *
         * @param OutputPage $out
         */
-       private function showDeletionLog( $out ) {
-               $title = $this->mArticle->getTitle();
-               $reader = new LogReader(
-                       new FauxRequest(
-                               array(
-                                       'page' => $title->getPrefixedText(),
-                                       'type' => 'delete',
-                                       )
-                       )
-               );
-               if( $reader->hasRows() ) {
-                       $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
-                       $out->addWikiText( wfMsg( 'recreate-deleted-warn' ) );
-                       $viewer = new LogViewer( $reader );
-                       $viewer->showList( $out );
-                       $out->addHtml( '</div>' );                      
-               }                               
+       protected function showDeletionLog( $out ) {
+               global $wgUser;
+               $loglist = new LogEventsList( $wgUser->getSkin(), $out );
+               $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
+               $count = $pager->getNumRows();
+               if ( $count > 0 ) {
+                       $pager->mLimit = 10;
+                       $out->addHTML( '<div class="mw-warning-with-logexcerpt">' );
+                       $out->addWikiMsg( 'recreate-deleted-warn' );
+                       $out->addHTML(
+                               $loglist->beginLogEventsList() .
+                               $pager->getBody() .
+                               $loglist->endLogEventsList()
+                       );
+                       if($count > 10){
+                               $out->addHTML( $wgUser->getSkin()->link(
+                                       SpecialPage::getTitleFor( 'Log' ),
+                                       wfMsgHtml( 'deletelog-fulllog' ),
+                                       array(),
+                                       array(
+                                               'type' => 'delete',
+                                               'page' => $this->mTitle->getPrefixedText() ) ) );
+                       }
+                       $out->addHTML( '</div>' );
+                       return true;
+               }
+               
+               return false;
        }
-       
-}
 
+       /**
+        * Attempt submission
+        * @return bool false if output is done, true if the rest of the form should be displayed
+        */
+       function attemptSave() {
+               global $wgUser, $wgOut, $wgTitle, $wgRequest;
+
+               $resultDetails = false;
+               $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
+
+               if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
+                       $this->didSave = true;
+               }
+
+               switch ($value) {
+                       case self::AS_HOOK_ERROR_EXPECTED:
+                       case self::AS_CONTENT_TOO_BIG:
+                       case self::AS_ARTICLE_WAS_DELETED:
+                       case self::AS_CONFLICT_DETECTED:
+                       case self::AS_SUMMARY_NEEDED:
+                       case self::AS_TEXTBOX_EMPTY:
+                       case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
+                       case self::AS_END:
+                               return true;
+
+                       case self::AS_HOOK_ERROR:
+                       case self::AS_FILTERING:
+                       case self::AS_SUCCESS_NEW_ARTICLE:
+                       case self::AS_SUCCESS_UPDATE:
+                               return false;
+
+                       case self::AS_SPAM_ERROR:
+                               $this->spamPage ( $resultDetails['spam'] );
+                               return false;
+
+                       case self::AS_BLOCKED_PAGE_FOR_USER:
+                               $this->blockedPage();
+                               return false;
+
+                       case self::AS_IMAGE_REDIRECT_ANON:
+                               $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
+                               return false;
+
+                       case self::AS_READ_ONLY_PAGE_ANON:
+                               $this->userNotLoggedInPage();
+                               return false;
 
+                       case self::AS_READ_ONLY_PAGE_LOGGED:
+                       case self::AS_READ_ONLY_PAGE:
+                               $wgOut->readOnlyPage();
+                               return false;
+
+                       case self::AS_RATE_LIMITED:
+                               $wgOut->rateLimited();
+                               return false;
+
+                       case self::AS_NO_CREATE_PERMISSION;
+                               $this->noCreatePermission();
+                               return;
+
+                       case self::AS_BLANK_ARTICLE:
+                               $wgOut->redirect( $wgTitle->getFullURL() );
+                               return false;
+
+                       case self::AS_IMAGE_REDIRECT_LOGGED:
+                               $wgOut->permissionRequired( 'upload' );
+                               return false;
+               }
+       }
+       
+       function getBaseRevision() {
+               if ( $this->mBaseRevision == false ) {
+                       $db = wfGetDB( DB_MASTER );
+                       $baseRevision = Revision::loadFromTimestamp(
+                               $db, $this->mTitle, $this->edittime );
+                       return $this->mBaseRevision = $baseRevision;
+               } else {
+                       return $this->mBaseRevision;
+               }
+       }
+}