/// <summary>
/// Updates the Selector control's <see cref="ItemsControl.ItemsSource"/> to include the
/// <see cref="NullItem"/> along with the objects in <see cref="ItemsSource"/>.
/// </summary>
protected void Adapt()
{
//if (CollectionView != null)
//{
// CollectionView.CurrentChanged -= CollectionView_CurrentChanged;
// CollectionView = null;
//}
if (Selector != null)
{
//if (ItemsSource is System.Collections.Specialized.INotifyCollectionChanged)
//{
// var col = ItemsSource as System.Collections.Specialized.INotifyCollectionChanged;
// col.CollectionChanged -= ItemsSource_CollectionChanged;
// col.CollectionChanged += ItemsSource_CollectionChanged;
//}
CompositeCollection comp = new CompositeCollection();
if (ItemsSource != null)
{
comp.Add(new CollectionContainer {
Collection = ItemsSource
});
}
//comp.Add(new CollectionContainer { Collection = new string[] { "(None)" } });
if (NullItems != null)
{
foreach (var item in NullItems)
{
if (IsAddingNullItemsFirst)
{
comp.Insert(0, item);
}
else
{
comp.Add(item);
}
}
}
//CollectionView = CollectionViewSource.GetDefaultView(comp);
//if (CollectionView != null) CollectionView.CurrentChanged += CollectionView_CurrentChanged;
Selector.ItemsSource = comp;
}
}