ListGridField: SelectItem-FilterEditor that uses setGroupValueFunction-logic

[Blama]

Hi Isomorphic,

I have a ListGridField with the following GroupValueFunction that is used when I group the ListGrid by this field.

setGroupValueFunction(new GroupValueFunction() {
	@Override
	public Object getGroupValue(Object value, ListGridRecord record, ListGridField field, String fieldName,
			ListGrid grid) {
		Integer i = record.getAttributeAsInt(ListGridFieldMaxAccounts.this.getName());
		if (i == null)
			return "ERROR";
		else if (i == 0)
			return "No accounts";
		else if (i > 0 && i <= 10)
			return "1-10 accounts";
		else if (i > 10 && i <= 20)
			return "11-20 accounts";
		else if (i > 20 && i <= 50)
			return "21-50 accounts";
		else
			return "more than 50 Accounts";
	}
});

What is the suggested approach for a SelectItem in the ListGrid's filter-row, that has exactly the same options (five in this case)?
The selection has to stand for a AdvancedCriteria with AND, I'd guess.

From whats happening in the end (2 criteria, AND-connected) it should be similar to the DateRangeItem that is shown in the filter row for DateItems in the ListGrid.

Thanks,
Blama