/// <summary>
/// Remove an item from the direct children of a group.
/// </summary>
/// <param name="group">Group to remove item from</param>
/// <param name="item">Item to remove</param>
/// <returns>True if item could not be removed</returns>
private bool RemoveFromGroupDirectly(CollectionViewGroupInternal group, object item)
{
int leafIndex = group.Remove(item, true);
if (leafIndex >= 0)
{
OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item, leafIndex));
return(false);
}
else
{
return(true);
}
}
//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
/// <summary>
/// Removes an empty group from the PagedCollectionView grouping
/// </summary>
/// <param name="group">Empty subgroup to remove</param>
private static void RemoveEmptyGroup(CollectionViewGroupInternal group)
{
CollectionViewGroupInternal parent = group.Parent;
if (parent != null)
{
GroupDescription groupBy = parent.GroupBy;
int index = parent.ProtectedItems.IndexOf(group);
// remove the subgroup unless it is one of the explicit groups
if (index >= groupBy.GroupNames.Count)
{
parent.Remove(group, false);
}
}
}