private int GetInsertIndex(ObservableList <ProxyInfo> data, ProxyInfo proxy, PreventChangeSortingDirection preventor)
{
if (preventor.HasSorting)
{
int index = data.BinarySearch(proxy, new ProxyInfoComparer(preventor.SortMemberPath, preventor.SortDirection));
if (index < 0)
{
index = ~index;
}
if (index >= 0)
{
return(index);
}
}
return(data.Count);
}
private void UpdateFiltering <TKey>(ObservableList <FilterData> list,
NotifyCollectionChangedEventArgs e,
Func <ProxyInfo, TKey> keySelector) where TKey : IComparable
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
foreach (ProxyInfo proxy in e.NewItems)
{
TKey data = keySelector(proxy);
FilterData filterData = new FilterData {
Data = data
};
int index = list.BinarySearch(filterData, new FilterDataComparer());
if (index < 0)
{
index = ~index;
filterData.Count = 1;
list.Insert(index, filterData);
}
else
{
list[index].Count++;
}
}
break;
case NotifyCollectionChangedAction.Remove:
foreach (ProxyInfo proxy in e.OldItems)
{
int index = list.BinarySearch(new FilterData {
Data = keySelector(proxy)
}, new FilterDataComparer());
if (index >= 0)
{
if (list[index].Count == 1)
{
list.Remove(list[index]);
}
else
{
list[index].Count--;
}
}
}
break;
case NotifyCollectionChangedAction.Reset:
list.Clear();
break;
default:
throw new NotSupportedException();
}
}
