/// <summary>
/// Initializes a new instance of the <see cref="ItemsControl"/> class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="name">The element's identifying name within its namescope.</param>
public ItemsControl(UltravioletContext uv, String name)
: base(uv, name)
{
this.itemContainerGenerator = new ItemContainerGenerator(this);
this.items = new ItemCollection(this);
this.items.CollectionReset += ItemsCollectionReset;
this.items.CollectionItemAdded += ItemsCollectionItemAdded;
this.items.CollectionItemRemoved += ItemsCollectionItemRemoved;
}
/// <summary>
/// Gets the next enabled and visible tab after the specified tab.
/// </summary>
private TabItem GetNextEnabledTabItem(Int32 start, Int32 delta)
{
if (delta == 0)
{
return(null);
}
var count = Items.Count;
var current = (count + ((start + delta) % count)) % count;
for (int i = 0; i < Items.Count; i++)
{
var container = ItemContainerGenerator.ContainerFromIndex(current) as TabItem;
if (container != null && container.IsEnabled && container.Visibility == Visibility.Visible)
{
return(container);
}
current = (count + ((start + delta) % count)) % count;
}
return(null);
}
/// <inheritdoc/>
protected internal override UIElement GetLogicalChild(Int32 childIndex)
{
var container = itemContainers[childIndex];
return((UIElement)ItemContainerGenerator.ItemFromContainer(container));
}