private void MeaningsChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Reset:
if (_meanings.Count > 0)
{
var meanings = new HashSet <Meaning>(_meanings);
foreach (Variety variety in _varieties)
{
variety.Words.RemoveAll(w => !meanings.Contains(w.Meaning));
}
CognacyDecisions.RemoveAll(cd => !meanings.Contains(cd.Meaning));
}
else
{
foreach (Variety variety in _varieties)
{
variety.Words.Clear();
}
CognacyDecisions.Clear();
}
break;
}
}
private void VarietiesChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Reset:
if (_varieties.Count > 0)
{
var varieties = new HashSet <Variety>(_varieties);
_varietyPairs.RemoveAll(vp => !varieties.Contains(vp.Variety1) || !varieties.Contains(vp.Variety2));
CognacyDecisions.RemoveAll(cd => !varieties.Contains(cd.Variety1) || !varieties.Contains(cd.Variety2));
}
else
{
_varietyPairs.Clear();
CognacyDecisions.Clear();
}
break;
}
}
