/// <summary>
/// Creates a container for an item that is included in the source collection.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>
/// Container for <paramref name="item" />.
/// </returns>
protected override FilterItemContainer <T> CreateContainer(T item)
{
var container = new FilterItemContainer <T>(item, Filter(item));
container.ValueChanged += ContainerOnIsIncludedChanged;
return(container);
}
/// <summary>
/// Destroys a container when it's item is removed from the source collection.
/// </summary>
/// <param name="container">The container.</param>
protected override void DestroyContainer(FilterItemContainer <T> container)
{
container.Dispose();
container.ValueChanged -= ContainerOnIsIncludedChanged;
}
