* @return A list of column states. */
private List<ColumnState> getStates()
{
ColumnSettingsManager manager = ColumnSettingsManager.getInstance();
List<ColumnState> stateList = new Vector<ColumnState>();
for (String key : manager.keySet())
{
ColumnState state = manager.get(key);
stateList.add(state);
}
Collections.sort(stateList);