private void updateEditor() {
    PsiFile originalPsi = myPreviewFile.resolveOriginalPsi();
    if (originalPsi != null && !myEditor.isDisposed()) {
      CodeStyleSettings settings = CodeStyle.getSettings(originalPsi);
      final Language language = myPreviewFile.getLanguage();
      myEditor.getSettings().setRightMargin(settings.getRightMargin(language));
      myEditor.getSettings().setSoftMargins(settings.getSoftMargins(language));
      myEditor.getSettings().setTabSize(settings.getTabSize(myPreviewFile.getFileType()));
    }
  }
private void updateEditor()