private NotifyCollectionChangedEventArgs Update(IEnumerable <T> updated, IReadOnlyList <NotifyCollectionChangedEventArgs> collectionChanges, Action <PropertyChangedEventArgs> propertyChanged, Action <NotifyCollectionChangedEventArgs> collectionChanged)
{
var retry = 0;
while (true)
{
this.temp.Clear();
try
{
this.temp.AddRange(updated);
break;
}
catch (InvalidOperationException e) when(e.Message == Exceptions.CollectionWasModified.Message &&
retry < 5)
{
retry++;
}
}
if (propertyChanged != null || collectionChanged != null)
{
var change = Diff.CollectionChange(this, this.temp, collectionChanges);
this.Items.Clear();
((List <T>) this.Items).AddRange(this.temp);
this.temp.Clear();
return(change);
}
this.Items.Clear();
((List <T>) this.Items).AddRange(this.temp);
this.temp.Clear();
return(null);
}
private NotifyCollectionChangedEventArgs Update(IReadOnlyList <T> updated, IReadOnlyList <NotifyCollectionChangedEventArgs> collectionChanges, bool calculateDiff)
{
NotifyCollectionChangedEventArgs change = calculateDiff
? Diff.CollectionChange(this.inner, updated, collectionChanges)
: null;
if (!calculateDiff || change != null)
{
this.inner.Clear();
this.inner.AddRange(updated);
}
return(change);
}