protected FilterParenthood <Filter.Filter, Filter.Group> GetFirstSubGroupFilter(Filter.Filter filter)
{
var e = VisitAllSubGroupFilters(filter).GetEnumerator();
if (e.MoveNext())
{
return(e.Current);
}
return(new FilterParenthood <Filter.Filter, Filter.Group>());
}
protected FilterParenthood <Filter.Filter, Filter.Group> GetDeepestGroupFilter(Filter.Filter filter)
{
foreach (var f in filter.SubFilters())
{
var sgf = GetDeepestGroupFilter(f);
if (sgf.child != null)
{
return(sgf);
}
if (f is Filter.Group)
{
Filter.Group gf = (Filter.Group)f;
return(new FilterParenthood <Filter.Filter, Filter.Group>(filter, gf));
}
}
return(new FilterParenthood <Filter.Filter, Filter.Group>());
}
protected IEnumerable <FilterParenthood <Filter.Filter, Filter.Group> > VisitAllSubGroupFilters(Filter.Filter filter)
{
foreach (var f in filter.SubFilters())
{
if (f is Filter.Group)
{
Filter.Group gf = (Filter.Group)f;
yield return(new FilterParenthood <Filter.Filter, Filter.Group>(filter, gf));
}
foreach (var f2 in VisitAllSubGroupFilters(f))
{
yield return(f2);
}
}
}
