public FilteredTracks AddFilter(TrackDanceFilter filter)
{
if (string.IsNullOrEmpty(filter.Name))
{
throw new ApplicationException("Filter name must be specified.");
}
var fi = new FilteredTracks(this, filter);
_allFilters.Add(fi);
if (!String.IsNullOrEmpty(fi.FilterGroup))
{
var fg = _filterGroups.SingleOrDefault((g) => g.Name.Equals(fi.FilterGroup, StringComparison.InvariantCultureIgnoreCase));
if (fg == null)
{
fg = new FilterGroup(fi.FilterGroup);
_filterGroups.Add(fg);
}
fg.Add(fi);
}
return(fi);
}
public LibraryFilter(Library library, TrackDanceFilter defaultFilter = null)
{
Library = library;
DefaultFilter = new FilteredTracks(this, defaultFilter ?? new TrackDanceFilter(), true);
FilterGroups = new ReadOnlyObservableCollection <FilterGroup>(_filterGroups);
}