* add OutputPage::addScriptFile() for easier adding of JS files, similar to OutputPag...
[lhc/web/wiklou.git] / includes / EditPage.php
index 2bb9e72..684ed66 100644 (file)
@@ -77,10 +77,10 @@ class EditPage {
        public $editFormTextAfterWarn;
        public $editFormTextAfterTools;
        public $editFormTextBottom;
-       
+
        /* $didSave should be set to true whenever an article was succesfully altered. */
        public $didSave = false;
-       
+
        public $suppressIntro = false;
 
        /**
@@ -99,13 +99,13 @@ class EditPage {
                $this->editFormTextAfterTools =
                $this->editFormTextBottom = "";
        }
-       
+
        /**
         * Fetch initial editing page content.
         * @private
         */
        function getContent( $def_text = '' ) {
-               global $wgOut, $wgRequest, $wgParser;
+               global $wgOut, $wgRequest, $wgParser, $wgMessageCache;
 
                # Get variables from query string :P
                $section = $wgRequest->getVal( 'section' );
@@ -118,7 +118,8 @@ class EditPage {
                $text = '';
                if( !$this->mTitle->exists() ) {
                        if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
-                               # If this is a system message, get the default text. 
+                               $wgMessageCache->loadAllMessages();
+                               # If this is a system message, get the default text.
                                $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
                        } else {
                                # If requested, preload some text.
@@ -152,39 +153,43 @@ 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' ) {
@@ -319,6 +324,25 @@ class EditPage {
                $this->mMetaData = $s ;
        }
 
+       protected function wasDeletedSinceLastEdit() {
+               /* 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.
+                */
+               if ( $this->deletedSinceEdit )
+                       return true;
+               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;
+                               }
+                       }
+               }
+               return $this->deletedSinceEdit;
+       }
+
        function submit() {
                $this->edit();
        }
@@ -354,7 +378,7 @@ class EditPage {
                        wfProfileOut( __METHOD__ );
                        return;
                }
-               
+
                if( wfReadOnly() ) {
                        $this->readOnlyPage( $this->getContent() );
                        wfProfileOut( __METHOD__ );
@@ -363,7 +387,7 @@ class EditPage {
 
                $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
                if( !$this->mTitle->exists() ) {
-                       $permErrors = array_merge( $permErrors, 
+                       $permErrors = array_merge( $permErrors,
                                wfArrayDiff2( $this->mTitle->getUserPermissionsErrors('create', $wgUser), $permErrors ) );
                }
 
@@ -394,10 +418,6 @@ class EditPage {
                        wfProfileOut( __METHOD__ );
                        return;
                } else {
-                       if( $wgRequest->getVal( 'action' ) == 'editredlink' ) {
-                               $wgOut->redirect( $this->mTitle->getFullUrl( 'action=edit' ) );
-                               return;
-                       }
                        if ( $this->save ) {
                                $this->formtype = 'save';
                        } else if ( $this->preview ) {
@@ -422,31 +442,10 @@ class EditPage {
                $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
                $this->isValidCssJsSubpage = $this->mTitle->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;
-                                       }
-                               }
-                       }
-               }
-
                # Show applicable editing introductions
                if( $this->formtype == 'initial' || $this->firsttime )
                        $this->showIntro();
-       
+
                if( $this->mTitle->isTalkPage() ) {
                        $wgOut->addWikiMsg( 'talkpagetext' );
                }
@@ -473,7 +472,7 @@ class EditPage {
                                wfProfileOut( __METHOD__ );
                                return;
                        }
-                       if( !$this->mTitle->getArticleId() ) 
+                       if( !$this->mTitle->getArticleId() )
                                wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
                }
 
@@ -485,13 +484,13 @@ class EditPage {
        /**
         * Show a read-only error
         * Parameters are the same as OutputPage:readOnlyPage()
-        * Redirect to the article page if action=editredlink
+        * Redirect to the article page if redlink=1
         */
        function readOnlyPage( $source = null, $protected = false, $reasons = array() ) {
                global $wgRequest, $wgOut;
-               if ( $wgRequest->getVal( 'action' ) === 'editredlink' ) {
+               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 
+                       // 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 {
@@ -535,15 +534,21 @@ class EditPage {
                $fname = 'EditPage::importFormData';
                wfProfileIn( $fname );
 
+               # 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' );
@@ -580,7 +585,7 @@ class EditPage {
                                        $this->preview = true;
                                }
                        }
-                       $this->save    = ! ( $this->preview OR $this->diff );
+                       $this->save = !$this->preview && !$this->diff;
                        if( !preg_match( '/^\d{14}$/', $this->edittime )) {
                                $this->edittime = null;
                        }
@@ -601,7 +606,7 @@ class EditPage {
                                $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
                        }
 
-                       $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" );
@@ -618,13 +623,14 @@ 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' );
 
@@ -662,7 +668,7 @@ class EditPage {
                        $ip = User::isIP( $username );
 
                        if ( $id == 0 && !$ip ) {
-                               $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>', 
+                               $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
                                        array( 'userpage-userdoesnotexist', $username ) );
                        }
                }
@@ -688,7 +694,7 @@ class EditPage {
                        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;
@@ -797,7 +803,7 @@ class EditPage {
 
                # 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 self::AS_ARTICLE_WAS_DELETED;
@@ -830,7 +836,7 @@ class EditPage {
                        }
 
                        $isComment = ( $this->section == 'new' );
-                       
+
                        $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
                                $this->minoredit, $this->watchthis, false, $isComment, $bot);
 
@@ -922,7 +928,7 @@ class EditPage {
                        }
                }
 
-               #And a similar thing for new sections
+               # And a similar thing for new sections
                if( $this->section == 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary' ) ) {
                        if (trim($this->summary) == '') {
                                $this->missingSummary = true;
@@ -992,7 +998,6 @@ class EditPage {
         */
        function initialiseForm() {
                $this->edittime = $this->mArticle->getTimestamp();
-               $this->summary = '';
                $this->textbox1 = $this->getContent(false);
                if ($this->textbox1 === false) return false;
 
@@ -1011,6 +1016,13 @@ class EditPage {
        function showEditForm( $formCallback=null ) {
                global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
 
+               # 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 );
 
@@ -1048,8 +1060,8 @@ class EditPage {
                                                        $matches );
                                                if( !empty( $matches[2] ) ) {
                                                        global $wgParser;
-                                                       $this->summary = "/* " . 
-                                                               $wgParser->stripSectionName(trim($matches[2])) . 
+                                                       $this->summary = "/* " .
+                                                               $wgParser->stripSectionName(trim($matches[2])) .
                                                                " */ ";
                                                }
                                        }
@@ -1080,13 +1092,13 @@ class EditPage {
                        }
                        if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
                        // Let sysop know that this will make private content public if saved
-                               
+
                                if( !$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() ) {
                                        $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
                                        $wgOut->addWikiMsg( 'editingold' );
@@ -1176,11 +1188,11 @@ class EditPage {
 
                global $wgRightsText;
                if ( $wgRightsText ) {
-                       $copywarnMsg = array( 'copyrightwarning', 
+                       $copywarnMsg = array( 'copyrightwarning',
                                '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
                                $wgRightsText );
                } else {
-                       $copywarnMsg = array( 'copyrightwarning2', 
+                       $copywarnMsg = array( 'copyrightwarning2',
                                '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
                }
 
@@ -1229,14 +1241,28 @@ 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 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<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
+                       $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
                        $editsummary = '';
-                       $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\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 />";
+                       $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' />{$summaryhiddens}<br />";
                        $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
                        $subjectpreview = '';
                }
@@ -1262,7 +1288,7 @@ class EditPage {
 
                $hidden = '';
                $recreate = '';
-               if ($this->deletedSinceEdit) {
+               if ($this->wasDeletedSinceLastEdit()) {
                        if ( 'save' != $this->formtype ) {
                                $wgOut->addWikiMsg('deletedwhileediting');
                        } else {
@@ -1309,18 +1335,24 @@ END
 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
 
+               $encodedtext = htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) );
+               if( $encodedtext !== '' ) {
+                       // 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.
+                       $encodedtext .= "\n";
+               }
+
                $wgOut->addHTML( <<<END
 $recreate
 {$commentsubject}
 {$subjectpreview}
 {$this->editFormTextBeforeContent}
 <textarea tabindex='1' accesskey="," name="wpTextbox1" id="wpTextbox1" rows='{$rows}'
-cols='{$cols}'{$ew} $hidden>
+cols='{$cols}'{$ew} $hidden>{$encodedtext}</textarea>
 END
-. htmlspecialchars( $this->safeUnicodeOutput( $this->textbox1 ) ) .
-"
-</textarea>
-               " );
+);
 
                $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
                $wgOut->addHTML( $this->editFormTextAfterWarn );
@@ -1339,21 +1371,6 @@ END
 </div><!-- editButtons -->
 </div><!-- editOptions -->");
 
-               $wgOut->addHtml( '<div class="mw-editTools">' );
-               $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
-               $wgOut->addHtml( '</div>' );
-
-               $wgOut->addHTML( $this->editFormTextAfterTools );
-
-               $wgOut->addHTML( "
-<div class='templatesUsed'>
-{$formattedtemplates}
-</div>
-<div class='hiddencats'>
-{$formattedhiddencats}
-</div>
-");
-
                /**
                 * To make it harder for someone to slip a user a page
                 * which submits an edit form to the wiki without their
@@ -1369,21 +1386,22 @@ END
                $token = htmlspecialchars( $wgUser->editToken() );
                $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
 
+               $wgOut->addHtml( '<div class="mw-editTools">' );
+               $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
+               $wgOut->addHtml( '</div>' );
 
-               # 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" );
-               }
+               $wgOut->addHTML( $this->editFormTextAfterTools );
 
-               # 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 ) );
+               $wgOut->addHTML( "
+<div class='templatesUsed'>
+{$formattedtemplates}
+</div>
+<div class='hiddencats'>
+{$formattedhiddencats}
+</div>
+");
 
-               if ( $this->isConflict ) {
+               if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
                        $wgOut->wrapWikiMsg( '==$1==', "yourdiff" );
 
                        $de = new DifferenceEngine( $this->mTitle );
@@ -1445,10 +1463,8 @@ 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" );
+               global $wgOut, $wgTitle;
+               $wgOut->addScriptFile( 'preview.js' );
                $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
                return "return !lpDoPreview(" .
                        "editform.wpTextbox1.value," .
@@ -1491,7 +1507,7 @@ END
         * @todo document
         */
        function getPreviewText() {
-               global $wgOut, $wgUser, $wgTitle, $wgParser;
+               global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang;
 
                $fname = 'EditPage::getPreviewText';
                wfProfileIn( $fname );
@@ -1539,21 +1555,40 @@ END
                                $toparse="== {$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 ) {
+                               $pos = strrpos( $this->mTitle->getText(), '/' );
+                               if ( $pos !== false ) {
+                                       $code = substr( $this->mTitle->getText(), $pos+1 );
+                                       switch ($code) {
+                                               case $wgLang->getCode():
+                                                       $obj = $wgLang; break;
+                                               case $wgContLang->getCode():
+                                                       $obj = $wgContLang; break;
+                                               default:
+                                                       $obj = Language::factory( $code );
+                                       }
+                                       $parserOptions->setTargetLanguage( $obj );
+                               }
+                       }
+
+
                        $parserOptions->setTidy(true);
                        $parserOptions->enableLimitReport();
-                       $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
+                       $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
                                        $this->mTitle, $parserOptions );
 
                        $previewHTML = $parserOutput->getText();
                        $wgOut->addParserOutputNoText( $parserOutput );
-                       
+
                        # ParserOutput might have altered the page title, so reset it
                        # Also, use the title defined by DISPLAYTITLE magic word when present
                        if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
                                $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
                        } else {
-                               $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );                        
+                               $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );
                        }
 
                        foreach ( $parserOutput->getTemplates() as $ns => $template)
@@ -1571,8 +1606,15 @@ END
                        $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
                }
 
+               if( $wgUser->getOption( 'previewontop' ) ) {
+                       // Spacer for the edit toolbar
+                       $previewfoot = '<p><br /></p>';
+               } else {
+                       $previewfoot = '';
+               }
+
                wfProfileOut( $fname );
-               return $previewhead . $previewHTML;
+               return $previewhead . $previewHTML . $previewfoot;
        }
 
        /**
@@ -1598,7 +1640,9 @@ END
                        $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
                        $wgOut->addHtml( '<hr />' );
                        $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
-                       $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
+                       # 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' ) );
                }
        }
 
@@ -1650,7 +1694,7 @@ END
                $wgOut->addHtml( '<div id="spamprotected">' );
                $wgOut->addWikiMsg( 'spamprotectiontext' );
                if ( $match )
-                       $wgOut->addWikiMsg( 'spamprotectionmatch',wfEscapeWikiText( $match ) );
+                       $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
                $wgOut->addHtml( '</div>' );
 
                $wgOut->returnToMain( false, $wgTitle );
@@ -1758,16 +1802,16 @@ END
                $toolarray = array(
                        array(  'image' => 'button_bold.png',
                                'id'    => 'mw-editbutton-bold',
-                               'open'  => '\\\'\\\'\\\'',
-                               'close' => '\\\'\\\'\\\'',
+                               'open'  => '\'\'\'',
+                               'close' => '\'\'\'',
                                'sample'=> wfMsg('bold_sample'),
                                'tip'   => wfMsg('bold_tip'),
                                'key'   => 'B'
                        ),
                        array(  'image' => 'button_italic.png',
                                'id'    => 'mw-editbutton-italic',
-                               'open'  => '\\\'\\\'',
-                               'close' => '\\\'\\\'',
+                               'open'  => '\'\'',
+                               'close' => '\'\'',
                                'sample'=> wfMsg('italic_sample'),
                                'tip'   => wfMsg('italic_tip'),
                                'key'   => 'I'
@@ -1790,8 +1834,8 @@ END
                        ),
                        array(  'image' => 'button_headline.png',
                                'id'    => 'mw-editbutton-headline',
-                               'open'  => "\\n== ",
-                               'close' => " ==\\n",
+                               'open'  => "\n== ",
+                               'close' => " ==\n",
                                'sample'=> wfMsg('headline_sample'),
                                'tip'   => wfMsg('headline_tip'),
                                'key'   => 'H'
@@ -1815,7 +1859,7 @@ END
                        array(  'image' => 'button_math.png',
                                'id'    => 'mw-editbutton-math',
                                'open'  => "<math>",
-                               'close' => "<\\/math>",
+                               'close' => "</math>",
                                'sample'=> wfMsg('math_sample'),
                                'tip'   => wfMsg('math_tip'),
                                'key'   => 'C'
@@ -1823,7 +1867,7 @@ END
                        array(  'image' => 'button_nowiki.png',
                                'id'    => 'mw-editbutton-nowiki',
                                'open'  => "<nowiki>",
-                               'close' => "<\\/nowiki>",
+                               'close' => "</nowiki>",
                                'sample'=> wfMsg('nowiki_sample'),
                                'tip'   => wfMsg('nowiki_tip'),
                                'key'   => 'N'
@@ -1838,7 +1882,7 @@ END
                        ),
                        array(  'image' => 'button_hr.png',
                                'id'    => 'mw-editbutton-hr',
-                               'open'  => "\\n----\\n",
+                               'open'  => "\n----\n",
                                'close' => '',
                                'sample'=> '',
                                'tip'   => wfMsg('hr_tip'),
@@ -1849,22 +1893,22 @@ END
                $toolbar.="<script type='$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>";
@@ -1938,7 +1982,7 @@ 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' ) ) {
@@ -1952,7 +1996,7 @@ 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',
@@ -1964,7 +2008,7 @@ END
                                'title'     => '',
                                'onclick'   => $this->doLivePreviewScript(),
                        );
-                       $buttons['live'] = wfElement('input', $temp, '');
+                       $buttons['live'] = Xml::element('input', $temp, '');
                } else {
                        $temp = array(
                                'id'        => 'wpPreview',
@@ -1975,7 +2019,7 @@ 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'] = '';
                }
 
@@ -1988,8 +2032,8 @@ 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 ) );
                return $buttons;
        }
@@ -2172,7 +2216,7 @@ END
                $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
                $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
@@ -2180,20 +2224,17 @@ END
         * @param OutputPage $out
         */
        private function showDeletionLog( $out ) {
-               $title = $this->mTitle;
-               $reader = new LogReader(
-                       new FauxRequest(
-                               array(
-                                       'page' => $title->getPrefixedText(),
-                                       'type' => 'delete',
-                                       )
-                       )
-               );
-               if( $reader->hasRows() ) {
+               global $wgUser;
+               $loglist = new LogEventsList( $wgUser->getSkin(), $out );
+               $pager = new LogPager( $loglist, 'delete', false, $this->mTitle->getPrefixedText() );
+               if( $pager->getNumRows() > 0 ) {
                        $out->addHtml( '<div id="mw-recreate-deleted-warn">' );
                        $out->addWikiMsg( 'recreate-deleted-warn' );
-                       $viewer = new LogViewer( $reader );
-                       $viewer->showList( $out );
+                       $out->addHTML(
+                               $loglist->beginLogEventsList() .
+                               $pager->getBody() .
+                               $loglist->endLogEventsList()
+                       );
                        $out->addHtml( '</div>' );
                }
        }
@@ -2207,7 +2248,7 @@ END
 
                $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;
                }
@@ -2257,7 +2298,7 @@ END
                        case self::AS_NO_CREATE_PERMISSION;
                                $this->noCreatePermission();
                                return;
-                       
+
                        case self::AS_BLANK_ARTICLE:
                                $wgOut->redirect( $wgTitle->getFullURL() );
                                return false;