private static IWpfTextViewHost CreateTextViewHost(string contentType)
{
var componentModel = ProjectHelpers.GetComponentModel();
var service = componentModel.GetService <IContentTypeRegistryService>();
var type = service.GetContentType(contentType);
var textBufferFactory = componentModel.GetService <ITextBufferFactoryService>();
var textViewFactory = componentModel.GetService <ITextEditorFactoryService>();
var textRoles = contentType == "JavaScript" ? new[] { PredefinedTextViewRoles.Document } : new[] { PredefinedTextViewRoles.Document, PredefinedTextViewRoles.Interactive };
ITextBuffer textBuffer = textBufferFactory.CreateTextBuffer(string.Empty, type);
ITextViewRoleSet roles = textViewFactory.CreateTextViewRoleSet(textRoles);
IWpfTextView textView = textViewFactory.CreateTextView(textBuffer, roles);
IWpfTextViewHost host = textViewFactory.CreateTextViewHost(textView, false);
return(host);
}