EditPage: Generate all messages using $this->context so we have titles
[lhc/web/wiklou.git] / includes / EditPage.php
index e0080fa..606b4cd 100644 (file)
@@ -21,6 +21,7 @@
  */
 
 use MediaWiki\Logger\LoggerFactory;
+use MediaWiki\MediaWikiServices;
 
 /**
  * The edit page/HTML interface (split from Article)
@@ -562,16 +563,29 @@ class EditPage {
 
                $revision = $this->mArticle->getRevisionFetched();
                // Disallow editing revisions with content models different from the current one
-               if ( $revision && $revision->getContentModel() !== $this->contentModel ) {
-                       $this->displayViewSourcePage(
-                               $this->getContentObject(),
-                               wfMessage(
-                                       'contentmodelediterror',
-                                       $revision->getContentModel(),
-                                       $this->contentModel
-                               )->plain()
-                       );
-                       return;
+               // Undo edits being an exception in order to allow reverting content model changes.
+               if ( $revision
+                       && $revision->getContentModel() !== $this->contentModel
+               ) {
+                       $prevRev = null;
+                       if ( $this->undidRev ) {
+                               $undidRevObj = Revision::newFromId( $this->undidRev );
+                               $prevRev = $undidRevObj ? $undidRevObj->getPrevious() : null;
+                       }
+                       if ( !$this->undidRev
+                               || !$prevRev
+                               || $prevRev->getContentModel() !== $this->contentModel
+                       ) {
+                               $this->displayViewSourcePage(
+                                       $this->getContentObject(),
+                                       $this->context->msg(
+                                               'contentmodelediterror',
+                                               $revision->getContentModel(),
+                                               $this->contentModel
+                                       )->plain()
+                               );
+                               return;
+                       }
                }
 
                $this->isConflict = false;
@@ -701,7 +715,7 @@ class EditPage {
                Hooks::run( 'EditPage::showReadOnlyForm:initial', [ $this, &$wgOut ] );
 
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
-               $wgOut->setPageTitle( wfMessage(
+               $wgOut->setPageTitle( $this->context->msg(
                        'viewsource-title',
                        $this->getContextTitle()->getPrefixedText()
                ) );
@@ -734,8 +748,7 @@ class EditPage {
                $this->showTextbox( $text, 'wpTextbox1', [ 'readonly' ] );
                $wgOut->addHTML( $this->editFormTextAfterContent );
 
-               $wgOut->addHTML( Html::rawElement( 'div', [ 'class' => 'templatesUsed' ],
-                       Linker::formatTemplates( $this->getTemplates() ) ) );
+               $wgOut->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
 
                $wgOut->addModules( 'mediawiki.action.edit.collapsibleFooter' );
 
@@ -995,9 +1008,17 @@ class EditPage {
                // May be overridden by revision.
                $this->contentFormat = $request->getText( 'format', $this->contentFormat );
 
-               if ( !ContentHandler::getForModelID( $this->contentModel )
-                       ->isSupportedFormat( $this->contentFormat )
-               ) {
+               try {
+                       $handler = ContentHandler::getForModelID( $this->contentModel );
+               } catch ( MWUnknownContentModelException $e ) {
+                       throw new ErrorPageError(
+                               'editpage-invalidcontentmodel-title',
+                               'editpage-invalidcontentmodel-text',
+                               [ $this->contentModel ]
+                       );
+               }
+
+               if ( !$handler->isSupportedFormat( $this->contentFormat ) ) {
                        throw new ErrorPageError(
                                'editpage-notsupportedcontentformat-title',
                                'editpage-notsupportedcontentformat-text',
@@ -1134,6 +1155,14 @@ class EditPage {
                                                        $oldContent = $this->page->getContent( Revision::RAW );
                                                        $popts = ParserOptions::newFromUserAndLang( $wgUser, $wgContLang );
                                                        $newContent = $content->preSaveTransform( $this->mTitle, $wgUser, $popts );
+                                                       if ( $newContent->getModel() !== $oldContent->getModel() ) {
+                                                               // The undo may change content
+                                                               // model if its reverting the top
+                                                               // edit. This can result in
+                                                               // mismatched content model/format.
+                                                               $this->contentModel = $newContent->getModel();
+                                                               $this->contentFormat = $oldrev->getContentFormat();
+                                                       }
 
                                                        if ( $newContent->equals( $oldContent ) ) {
                                                                # Tell the user that the undo results in no change,
@@ -1149,12 +1178,12 @@ class EditPage {
                                                                if ( $firstrev && $firstrev->getId() == $undo ) {
                                                                        $userText = $undorev->getUserText();
                                                                        if ( $userText === '' ) {
-                                                                               $undoSummary = wfMessage(
+                                                                               $undoSummary = $this->context->msg(
                                                                                        'undo-summary-username-hidden',
                                                                                        $undo
                                                                                )->inContentLanguage()->text();
                                                                        } else {
-                                                                               $undoSummary = wfMessage(
+                                                                               $undoSummary = $this->context->msg(
                                                                                        'undo-summary',
                                                                                        $undo,
                                                                                        $userText
@@ -1163,7 +1192,7 @@ class EditPage {
                                                                        if ( $this->summary === '' ) {
                                                                                $this->summary = $undoSummary;
                                                                        } else {
-                                                                               $this->summary = $undoSummary . wfMessage( 'colon-separator' )
+                                                                               $this->summary = $undoSummary . $this->context->msg( 'colon-separator' )
                                                                                        ->inContentLanguage()->text() . $this->summary;
                                                                        }
                                                                        $this->undidRev = $undo;
@@ -1181,7 +1210,7 @@ class EditPage {
                                        // Messages: undo-success, undo-failure, undo-norev, undo-nochange
                                        $class = ( $undoMsg == 'success' ? '' : 'error ' ) . "mw-undo-{$undoMsg}";
                                        $this->editFormPageTop .= $wgOut->parse( "<div class=\"{$class}\">" .
-                                               wfMessage( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
+                                               $this->context->msg( 'undo-' . $undoMsg )->plain() . '</div>', true, /* interface */true );
                                }
 
                                if ( $content === false ) {
@@ -1264,9 +1293,11 @@ class EditPage {
                        $handler = ContentHandler::getForModelID( $this->contentModel );
 
                        return $handler->makeEmptyContent();
-               } else {
+               } elseif ( !$this->undidRev ) {
                        // Content models should always be the same since we error
-                       // out if they are different before this point.
+                       // out if they are different before this point (in ->edit()).
+                       // The exception being, during an undo, the current revision might
+                       // differ from the prior revision.
                        $logger = LoggerFactory::getInstance( 'editpage' );
                        if ( $this->contentModel !== $rev->getContentModel() ) {
                                $logger->warning( "Overriding content model from current edit {prev} to {new}", [
@@ -1290,9 +1321,8 @@ class EditPage {
                                ] );
                                $this->contentFormat = $rev->getContentFormat();
                        }
-
-                       return $content;
                }
+               return $content;
        }
 
        /**
@@ -1644,7 +1674,7 @@ class EditPage {
                        // passed.
                        if ( $this->summary === '' ) {
                                $cleanSectionTitle = $wgParser->stripSectionName( $this->sectiontitle );
-                               return wfMessage( 'newsectionsummary' )
+                               return $this->context->msg( 'newsectionsummary' )
                                        ->rawParams( $cleanSectionTitle )->inContentLanguage()->text();
                        }
                } elseif ( $this->summary !== '' ) {
@@ -1652,7 +1682,7 @@ class EditPage {
                        # This is a new section, so create a link to the new section
                        # in the revision summary.
                        $cleanSummary = $wgParser->stripSectionName( $this->summary );
-                       return wfMessage( 'newsectionsummary' )
+                       return $this->context->msg( 'newsectionsummary' )
                                ->rawParams( $cleanSummary )->inContentLanguage()->text();
                }
                return $this->summary;
@@ -1836,7 +1866,9 @@ class EditPage {
                        $status->value = self::AS_READ_ONLY_PAGE;
                        return $status;
                }
-               if ( $wgUser->pingLimiter() || $wgUser->pingLimiter( 'linkpurge', 0 ) ) {
+               if ( $wgUser->pingLimiter() || $wgUser->pingLimiter( 'linkpurge', 0 )
+                       || ( $changingContentModel && $wgUser->pingLimiter( 'editcontentmodel' ) )
+               ) {
                        $status->fatal( 'actionthrottledtext' );
                        $status->value = self::AS_RATE_LIMITED;
                        return $status;
@@ -2325,7 +2357,7 @@ class EditPage {
                if ( $displayTitle === false ) {
                        $displayTitle = $contextTitle->getPrefixedText();
                }
-               $wgOut->setPageTitle( wfMessage( $msg, $displayTitle ) );
+               $wgOut->setPageTitle( $this->context->msg( $msg, $displayTitle ) );
                # Transmit the name of the message to JavaScript for live preview
                # Keep Resources.php/mediawiki.action.edit.preview in sync with the possible keys
                $wgOut->addJsConfigVars( [
@@ -2410,7 +2442,7 @@ class EditPage {
                # Try to add a custom edit intro, or use the standard one if this is not possible.
                if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
                        $helpLink = wfExpandUrl( Skin::makeInternalOrExternalUrl(
-                               wfMessage( 'helppage' )->inContentLanguage()->text()
+                               $this->context->msg( 'helppage' )->inContentLanguage()->text()
                        ) );
                        if ( $wgUser->isLoggedIn() ) {
                                $wgOut->wrapWikiMsg(
@@ -2600,7 +2632,7 @@ class EditPage {
                        . Html::rawElement(
                                'label',
                                [ 'for' => 'wpAntispam' ],
-                               wfMessage( 'simpleantispam-label' )->parse()
+                               $this->context->msg( 'simpleantispam-label' )->parse()
                        )
                        . Xml::element(
                                'input',
@@ -2630,8 +2662,8 @@ class EditPage {
                                : 'confirmrecreate';
                        $wgOut->addHTML(
                                '<div class="mw-confirm-recreate">' .
-                                       wfMessage( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
-                               Xml::checkLabel( wfMessage( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
+                                       $this->context->msg( $key, $username, "<nowiki>$comment</nowiki>" )->parse() .
+                               Xml::checkLabel( $this->context->msg( 'recreate' )->text(), 'wpRecreate', 'wpRecreate', false,
                                        [ 'title' => Linker::titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' ]
                                ) .
                                '</div>'
@@ -2720,8 +2752,7 @@ class EditPage {
 
                $wgOut->addHTML( $this->editFormTextAfterTools . "\n" );
 
-               $wgOut->addHTML( Html::rawElement( 'div', [ 'class' => 'templatesUsed' ],
-                       Linker::formatTemplates( $this->getTemplates(), $this->preview, $this->section != '' ) ) );
+               $wgOut->addHTML( $this->makeTemplatesOnThisPageList( $this->getTemplates() ) );
 
                $wgOut->addHTML( Html::rawElement( 'div', [ 'class' => 'hiddencats' ],
                        Linker::formatHiddenCategories( $this->page->getHiddenCategories() ) ) );
@@ -2737,7 +2768,7 @@ class EditPage {
                                $this->showConflict();
                        } catch ( MWContentSerializationException $ex ) {
                                // this can't really happen, but be nice if it does.
-                               $msg = wfMessage(
+                               $msg = $this->context->msg(
                                        'content-failed-to-parse',
                                        $this->contentModel,
                                        $this->contentFormat,
@@ -2770,6 +2801,32 @@ class EditPage {
 
        }
 
+       /**
+        * Wrapper around TemplatesOnThisPageFormatter to make
+        * a "templates on this page" list.
+        *
+        * @param Title[] $templates
+        * @return string HTML
+        */
+       protected function makeTemplatesOnThisPageList( array $templates ) {
+               $templateListFormatter = new TemplatesOnThisPageFormatter(
+                       $this->context, MediaWikiServices::getInstance()->getLinkRenderer()
+               );
+
+               // preview if preview, else section if section, else false
+               $type = false;
+               if ( $this->preview ) {
+                       $type = 'preview';
+               } elseif ( $this->section != '' ) {
+                       $type = 'section';
+               }
+
+               return Html::rawElement( 'div', [ 'class' => 'templatesUsed' ],
+                       $templateListFormatter->format( $templates, $type )
+               );
+
+       }
+
        /**
         * Extract the section title from current section text, if any.
         *
@@ -2802,7 +2859,7 @@ class EditPage {
                if ( count( $editNotices ) ) {
                        $wgOut->addHTML( implode( "\n", $editNotices ) );
                } else {
-                       $msg = wfMessage( 'editnotice-notext' );
+                       $msg = $this->context->msg( 'editnotice-notext' );
                        if ( !$msg->isDisabled() ) {
                                $wgOut->addHTML(
                                        '<div class="mw-editnotice-notext">'
@@ -2997,7 +3054,7 @@ class EditPage {
                                ]
                        );
                } else {
-                       if ( !wfMessage( 'longpage-hint' )->isDisabled() ) {
+                       if ( !$this->context->msg( 'longpage-hint' )->isDisabled() ) {
                                $wgOut->wrapWikiMsg( "<div id='mw-edit-longpage-hint'>\n$1\n</div>",
                                        [
                                                'longpage-hint',
@@ -3018,14 +3075,14 @@ class EditPage {
         * subclasses may reorganize the form.
         * Note that you do not need to worry about the label's for=, it will be
         * inferred by the id given to the input. You can remove them both by
-        * passing array( 'id' => false ) to $userInputAttrs.
+        * passing [ 'id' => false ] to $userInputAttrs.
         *
         * @param string $summary The value of the summary input
         * @param string $labelText The html to place inside the label
         * @param array $inputAttrs Array of attrs to use on the input
         * @param array $spanLabelAttrs Array of attrs to use on the span inside the label
         *
-        * @return array An array in the format array( $label, $input )
+        * @return array An array in the format [ $label, $input ]
         */
        function getSummaryInput( $summary = "", $labelText = null,
                $inputAttrs = null, $spanLabelAttrs = null
@@ -3078,7 +3135,7 @@ class EditPage {
                                return;
                        }
                }
-               $labelText = wfMessage( $isSubjectPreview ? 'subject' : 'summary' )->parse();
+               $labelText = $this->context->msg( $isSubjectPreview ? 'subject' : 'summary' )->parse();
                list( $label, $input ) = $this->getSummaryInput(
                        $summary,
                        $labelText,
@@ -3105,13 +3162,14 @@ class EditPage {
                global $wgParser;
 
                if ( $isSubjectPreview ) {
-                       $summary = wfMessage( 'newsectionsummary' )->rawParams( $wgParser->stripSectionName( $summary ) )
+                       $summary = $this->context->msg( 'newsectionsummary' )
+                               ->rawParams( $wgParser->stripSectionName( $summary ) )
                                ->inContentLanguage()->text();
                }
 
                $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
 
-               $summary = wfMessage( $message )->parse()
+               $summary = $this->context->msg( $message )->parse()
                        . Linker::commentBlock( $summary, $this->mTitle, $isSubjectPreview );
                return Xml::tags( 'div', [ 'class' => 'mw-summary-preview' ], $summary );
        }
@@ -3276,7 +3334,7 @@ HTML
                        try {
                                $this->showDiff();
                        } catch ( MWContentSerializationException $ex ) {
-                               $msg = wfMessage(
+                               $msg = $this->context->msg(
                                        'content-failed-to-parse',
                                        $this->contentModel,
                                        $this->contentFormat,
@@ -3351,8 +3409,8 @@ HTML
                }
 
                if ( ( $oldContent && !$oldContent->isEmpty() ) || ( $newContent && !$newContent->isEmpty() ) ) {
-                       $oldtitle = wfMessage( $oldtitlemsg )->parse();
-                       $newtitle = wfMessage( 'yourtext' )->parse();
+                       $oldtitle = $this->context->msg( $oldtitlemsg )->parse();
+                       $newtitle = $this->context->msg( 'yourtext' )->parse();
 
                        if ( !$oldContent ) {
                                $oldContent = $newContent->getContentHandler()->makeEmptyContent();
@@ -3379,7 +3437,7 @@ HTML
         */
        protected function showHeaderCopyrightWarning() {
                $msg = 'editpage-head-copy-warn';
-               if ( !wfMessage( $msg )->isDisabled() ) {
+               if ( !$this->context->msg( $msg )->isDisabled() ) {
                        global $wgOut;
                        $wgOut->wrapWikiMsg( "<div class='editpage-head-copywarn'>\n$1\n</div>",
                                'editpage-head-copy-warn' );
@@ -3397,7 +3455,7 @@ HTML
        protected function showTosSummary() {
                $msg = 'editpage-tos-summary';
                Hooks::run( 'EditPageTosSummary', [ $this->mTitle, &$msg ] );
-               if ( !wfMessage( $msg )->isDisabled() ) {
+               if ( !$this->context->msg( $msg )->isDisabled() ) {
                        global $wgOut;
                        $wgOut->addHTML( '<div class="mw-tos-summary">' );
                        $wgOut->addWikiMsg( $msg );
@@ -3408,7 +3466,7 @@ HTML
        protected function showEditTools() {
                global $wgOut;
                $wgOut->addHTML( '<div class="mw-editTools">' .
-                       wfMessage( 'edittools' )->inContentLanguage()->parse() .
+                       $this->context->msg( 'edittools' )->inContentLanguage()->parse() .
                        '</div>' );
        }
 
@@ -3443,7 +3501,7 @@ HTML
                Hooks::run( 'EditPageCopyrightWarning', [ $title, &$copywarnMsg ] );
 
                return "<div id=\"editpage-copywarn\">\n" .
-                       call_user_func_array( 'wfMessage', $copywarnMsg )->$format() . "\n</div>";
+                       call_user_func_array( 'wfMessage', $copywarnMsg )->title( $title )->$format() . "\n</div>";
        }
 
        /**
@@ -3490,19 +3548,19 @@ HTML
                if ( $cancel !== '' ) {
                        $cancel .= Html::element( 'span',
                                [ 'class' => 'mw-editButtons-pipe-separator' ],
-                               wfMessage( 'pipe-separator' )->text() );
+                               $this->context->msg( 'pipe-separator' )->text() );
                }
 
-               $message = wfMessage( 'edithelppage' )->inContentLanguage()->text();
+               $message = $this->context->msg( 'edithelppage' )->inContentLanguage()->text();
                $edithelpurl = Skin::makeInternalOrExternalUrl( $message );
                $attrs = [
                        'target' => 'helpwindow',
                        'href' => $edithelpurl,
                ];
-               $edithelp = Html::linkButton( wfMessage( 'edithelp' )->text(),
+               $edithelp = Html::linkButton( $this->context->msg( 'edithelp' )->text(),
                        $attrs, [ 'mw-ui-quiet' ] ) .
-                       wfMessage( 'word-separator' )->escaped() .
-                       wfMessage( 'newwindow' )->parse();
+                       $this->context->msg( 'word-separator' )->escaped() .
+                       $this->context->msg( 'newwindow' )->parse();
 
                $wgOut->addHTML( "      <span class='cancelLink'>{$cancel}</span>\n" );
                $wgOut->addHTML( "      <span class='editHelp'>{$edithelp}</span>\n" );
@@ -3540,8 +3598,8 @@ HTML
                        $de = $handler->createDifferenceEngine( $this->mArticle->getContext() );
                        $de->setContent( $content2, $content1 );
                        $de->showDiff(
-                               wfMessage( 'yourtext' )->parse(),
-                               wfMessage( 'storedversion' )->text()
+                               $this->context->msg( 'yourtext' )->parse(),
+                               $this->context->msg( 'storedversion' )->text()
                        );
 
                        $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
@@ -3563,7 +3621,7 @@ HTML
 
                return Linker::linkKnown(
                        $this->getContextTitle(),
-                       wfMessage( 'cancel' )->parse(),
+                       $this->context->msg( 'cancel' )->parse(),
                        Html::buttonAttributes( $attrs, [ 'mw-ui-quiet' ] ),
                        $cancelParams
                );
@@ -3613,7 +3671,7 @@ HTML
         * @return bool|stdClass
         */
        protected function getLastDelete() {
-               $dbr = wfGetDB( DB_SLAVE );
+               $dbr = wfGetDB( DB_REPLICA );
                $data = $dbr->selectRow(
                        [ 'logging', 'user' ],
                        [
@@ -3640,11 +3698,11 @@ HTML
                // Quick paranoid permission checks...
                if ( is_object( $data ) ) {
                        if ( $data->log_deleted & LogPage::DELETED_USER ) {
-                               $data->user_name = wfMessage( 'rev-deleted-user' )->escaped();
+                               $data->user_name = $this->context->msg( 'rev-deleted-user' )->escaped();
                        }
 
                        if ( $data->log_deleted & LogPage::DELETED_COMMENT ) {
-                               $data->log_comment = wfMessage( 'rev-deleted-comment' )->escaped();
+                               $data->log_comment = $this->context->msg( 'rev-deleted-comment' )->escaped();
                        }
                }
 
@@ -3671,7 +3729,8 @@ HTML
                                // string, which happens when you initially edit
                                // a category page, due to automatic preview-on-open.
                                $parsedNote = $wgOut->parse( "<div class='previewnote'>" .
-                                       wfMessage( 'session_fail_preview_html' )->text() . "</div>", true, /* interface */true );
+                                       $this->context->msg( 'session_fail_preview_html' )->text() . "</div>",
+                                       true, /* interface */true );
                        }
                        $stats->increment( 'edit.failures.session_loss' );
                        return $parsedNote;
@@ -3693,22 +3752,22 @@ HTML
                        # provide a anchor link to the editform
                        $continueEditing = '<span class="mw-continue-editing">' .
                                '[[#' . self::EDITFORM_ID . '|' . $wgLang->getArrow() . ' ' .
-                               wfMessage( 'continue-editing' )->text() . ']]</span>';
+                               $this->context->msg( 'continue-editing' )->text() . ']]</span>';
                        if ( $this->mTriedSave && !$this->mTokenOk ) {
                                if ( $this->mTokenOkExceptSuffix ) {
-                                       $note = wfMessage( 'token_suffix_mismatch' )->plain();
+                                       $note = $this->context->msg( 'token_suffix_mismatch' )->plain();
                                        $stats->increment( 'edit.failures.bad_token' );
                                } else {
-                                       $note = wfMessage( 'session_fail_preview' )->plain();
+                                       $note = $this->context->msg( 'session_fail_preview' )->plain();
                                        $stats->increment( 'edit.failures.session_loss' );
                                }
                        } elseif ( $this->incompleteForm ) {
-                               $note = wfMessage( 'edit_form_incomplete' )->plain();
+                               $note = $this->context->msg( 'edit_form_incomplete' )->plain();
                                if ( $this->mTriedSave ) {
                                        $stats->increment( 'edit.failures.incomplete_form' );
                                }
                        } else {
-                               $note = wfMessage( 'previewnote' )->plain() . ' ' . $continueEditing;
+                               $note = $this->context->msg( 'previewnote' )->plain() . ' ' . $continueEditing;
                        }
 
                        # don't parse non-wikitext pages, show message about preview
@@ -3739,7 +3798,7 @@ HTML
                                # Messages: usercsspreview, userjspreview, sitecsspreview, sitejspreview
                                if ( $level && $format ) {
                                        $note = "<div id='mw-{$level}{$format}preview'>" .
-                                               wfMessage( "{$level}{$format}preview" )->text() .
+                                               $this->context->msg( "{$level}{$format}preview" )->text() .
                                                ' ' . $continueEditing . "</div>";
                                }
                        }
@@ -3765,7 +3824,7 @@ HTML
                        }
 
                } catch ( MWContentSerializationException $ex ) {
-                       $m = wfMessage(
+                       $m = $this->context->msg(
                                'content-failed-to-parse',
                                $this->contentModel,
                                $this->contentFormat,
@@ -3777,13 +3836,13 @@ HTML
 
                if ( $this->isConflict ) {
                        $conflict = '<h2 id="mw-previewconflict">'
-                               . wfMessage( 'previewconflict' )->escaped() . "</h2>\n";
+                               . $this->context->msg( 'previewconflict' )->escaped() . "</h2>\n";
                } else {
                        $conflict = '<hr />';
                }
 
                $previewhead = "<div class='previewnote'>\n" .
-                       '<h2 id="mw-previewheader">' . wfMessage( 'preview' )->escaped() . "</h2>" .
+                       '<h2 id="mw-previewheader">' . $this->context->msg( 'preview' )->escaped() . "</h2>" .
                        $wgOut->parse( $note, true, /* interface */true ) . $conflict . "</div>\n";
 
                $pageViewLang = $this->mTitle->getPageViewLanguage();
@@ -4003,11 +4062,11 @@ HTML
                // don't show the minor edit checkbox if it's a new page or section
                if ( !$this->isNew ) {
                        $checkboxes['minor'] = '';
-                       $minorLabel = wfMessage( 'minoredit' )->parse();
+                       $minorLabel = $this->context->msg( 'minoredit' )->parse();
                        if ( $wgUser->isAllowed( 'minoredit' ) ) {
                                $attribs = [
                                        'tabindex' => ++$tabindex,
-                                       'accesskey' => wfMessage( 'accesskey-minoredit' )->text(),
+                                       'accesskey' => $this->context->msg( 'accesskey-minoredit' )->text(),
                                        'id' => 'wpMinoredit',
                                ];
                                $minorEditHtml =
@@ -4026,12 +4085,12 @@ HTML
                        }
                }
 
-               $watchLabel = wfMessage( 'watchthis' )->parse();
+               $watchLabel = $this->context->msg( 'watchthis' )->parse();
                $checkboxes['watch'] = '';
                if ( $wgUser->isLoggedIn() ) {
                        $attribs = [
                                'tabindex' => ++$tabindex,
-                               'accesskey' => wfMessage( 'accesskey-watch' )->text(),
+                               'accesskey' => $this->context->msg( 'accesskey-watch' )->text(),
                                'id' => 'wpWatchthis',
                        ];
                        $watchThisHtml =
@@ -4071,7 +4130,7 @@ HTML
                } else {
                        $buttonLabelKey = !$this->mTitle->exists() ? 'savearticle' : 'savechanges';
                }
-               $buttonLabel = wfMessage( $buttonLabelKey )->text();
+               $buttonLabel = $this->context->msg( $buttonLabelKey )->text();
                $attribs = [
                        'id' => 'wpSave',
                        'name' => 'wpSave',
@@ -4085,7 +4144,7 @@ HTML
                        'name' => 'wpPreview',
                        'tabindex' => $tabindex,
                ] + Linker::tooltipAndAccesskeyAttribs( 'preview' );
-               $buttons['preview'] = Html::submitButton( wfMessage( 'showpreview' )->text(),
+               $buttons['preview'] = Html::submitButton( $this->context->msg( 'showpreview' )->text(),
                        $attribs );
                $buttons['live'] = '';
 
@@ -4094,7 +4153,7 @@ HTML
                        'name' => 'wpDiff',
                        'tabindex' => ++$tabindex,
                ] + Linker::tooltipAndAccesskeyAttribs( 'diff' );
-               $buttons['diff'] = Html::submitButton( wfMessage( 'showdiff' )->text(),
+               $buttons['diff'] = Html::submitButton( $this->context->msg( 'showdiff' )->text(),
                        $attribs );
 
                Hooks::run( 'EditPageBeforeEditButtons', [ &$this, &$buttons, &$tabindex ] );
@@ -4108,9 +4167,9 @@ HTML
        function noSuchSectionPage() {
                global $wgOut;
 
-               $wgOut->prepareErrorPage( wfMessage( 'nosuchsectiontitle' ) );
+               $wgOut->prepareErrorPage( $this->context->msg( 'nosuchsectiontitle' ) );
 
-               $res = wfMessage( 'nosuchsectiontext', $this->section )->parseAsBlock();
+               $res = $this->context->msg( 'nosuchsectiontext', $this->section )->parseAsBlock();
                Hooks::run( 'EditPageNoSuchSection', [ &$this, &$res ] );
                $wgOut->addHTML( $res );
 
@@ -4129,7 +4188,7 @@ HTML
                if ( is_array( $match ) ) {
                        $match = $wgLang->listToText( $match );
                }
-               $wgOut->prepareErrorPage( wfMessage( 'spamprotectiontitle' ) );
+               $wgOut->prepareErrorPage( $this->context->msg( 'spamprotectiontitle' ) );
 
                $wgOut->addHTML( '<div id="spamprotected">' );
                $wgOut->addWikiMsg( 'spamprotectiontext' );