void SortKeyChanged(object sender, SortKeyChangedEventArgs e)
{
if (!WeakThis.TryGetTarget(out var @this))
{
this.FileReference.SortKeyChanged -= this.SortKeyChanged;
}
else
{
@this.RecomputeComponents();
}
}
private void Item_SortKeyChanged(object sender, SortKeyChangedEventArgs e)
{
if (_handlingSortKeyChanged)
{
return;
}
_handlingSortKeyChanged = true;
try
{
if (sender is FileReference item)
{
var surrogate = new FileReference()
{
SortKey = e.NewSortKey
};
item.SortKey = e.OldSortKey;
int oldIndex = _list.BinarySearch(item);
int newIndex = _list.BinarySearch(surrogate);
if (oldIndex < 0)
{
_list.Remove(item);
}
else
{
_list.RemoveAt(oldIndex);
}
if (newIndex < 0)
{
newIndex = ~newIndex;
}
if (oldIndex < newIndex)
{
newIndex--;
}
item.SortKey = e.NewSortKey;
_list.Insert(newIndex, item);
}
}
finally
{
_handlingSortKeyChanged = false;
}
}