protected Editor createEditor() {
    final EditorFactory editorFactory = EditorFactory.getInstance();
    final Document document = editorFactory.createDocument("");
    final Editor editor = editorFactory.createViewer(document, myProject);
    ((EditorEx)editor).setHighlighter(HighlighterFactory.createHighlighter(myProject, myFileName));
    return editor;
  }
protected Editor createEditor()