/// <summary>
/// Initializes a new instance of the <see cref="ItemContainerEventArgs"/> class.
/// </summary>
/// <param name="startingIndex">The index of the first container in the source items.</param>
/// <param name="container">The container.</param>
public ItemContainerEventArgs(
int startingIndex,
ItemContainer container)
{
StartingIndex = startingIndex;
Containers = new[] { container };
}
/// <inheritdoc/>
public IEnumerable<ItemContainer> Materialize(
int startingIndex,
IEnumerable items,
IMemberSelector selector)
{
Contract.Requires<ArgumentNullException>(items != null);
int index = startingIndex;
var result = new List<ItemContainer>();
foreach (var item in items)
{
var i = selector != null ? selector.Select(item) : item;
var container = new ItemContainer(CreateContainer(i), item, index++);
result.Add(container);
}
AddContainers(result);
Materialized?.Invoke(this, new ItemContainerEventArgs(startingIndex, result));
return result.Where(x => x != null).ToList();
}
