/**
* Provide an edge count filter that corresponds to the UI's values.
*/
public EdgeCountPredicate getIncludeTest() {
RangeOption option = COMBO_DISPLAY[rangeOp.getSelectionIndex()];
int loValue = parseLimit(loLimit.getText(), 0);
int hiValue = parseLimit(hiLimit.getText(), loValue + 1);
return option.getIncludeTest(loValue, hiValue);
}