private void UpdateFilters()
{
Log.Debug("Updating filters");
if (_filterSchemes != null)
{
_filterSchemes.Schemes.CollectionChanged -= OnFilterSchemesCollectionChanged;
}
_filterSchemes = _filterSchemeManager.FilterSchemes;
if (_filterSchemes != null)
{
_filterSchemes.Schemes.CollectionChanged += OnFilterSchemesCollectionChanged;
}
var newSchemes = new ObservableCollection <FilterScheme>();
if (RawCollection == null)
{
_targetType = null;
}
else
{
_targetType = CollectionHelper.GetTargetType(RawCollection);
if (_targetType != null)
{
((ICollection <FilterScheme>)newSchemes).AddRange((from scheme in _filterSchemes.Schemes
where scheme.TargetType != null && _targetType.IsAssignableFromEx(scheme.TargetType)
select scheme));
}
}
newSchemes.Insert(0, NoFilterFilter);
if (AvailableSchemes == null || !Catel.Collections.CollectionHelper.IsEqualTo(AvailableSchemes, newSchemes))
{
AvailableSchemes = newSchemes;
var selectedFilter = _filterService.SelectedFilter ?? NoFilterFilter;
SelectedFilterScheme = selectedFilter;
}
}
private void UpdateFilterGroups()
{
var applicableFilterSchemes = new List <FilterScheme>();
if (RawCollection is null)
{
_targetType = null;
}
else
{
_targetType = CollectionHelper.GetTargetType(RawCollection);
if (_targetType != null && _filterSchemes != null)
{
((ICollection <FilterScheme>)applicableFilterSchemes).AddRange((from scheme in _filterSchemes.Schemes
where scheme.TargetType != null && _targetType.IsAssignableFromEx(scheme.TargetType)
select scheme));
}
}
applicableFilterSchemes.Insert(0, _noFilterFilter);
var filterGroups = (from filterScheme in applicableFilterSchemes
//where filterScheme.IsVisible
orderby filterScheme.FilterGroup, filterScheme.Title, filterScheme.CanDelete
group filterScheme by filterScheme.FilterGroup into g
select new FilterGroup(g.Key, g)).ToList();
// Ensure no filter is at the top
var noFilterGroup = filterGroups.First(x => x.Title == _noFilterFilter.FilterGroup);
noFilterGroup.FilterSchemes.Remove(_noFilterFilter);
noFilterGroup.FilterSchemes.Insert(0, _noFilterFilter);
FilterGroups = filterGroups;
}