private static JComponent getHeaderComponent() {
    JPanel previewHeaderPanel = new JPanel();
    previewHeaderPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
    JLabel warningLabel = new JLabel(EditorConfigBundle.message("editor.preview.not.saved.warning"));
    warningLabel.setForeground(JBColor.GRAY);
    previewHeaderPanel.add(warningLabel);
    previewHeaderPanel.setBorder(IdeBorderFactory.createBorder());
    return previewHeaderPanel;
  }
private static JComponent getHeaderComponent()