/// <summary>
/// Gets the collection of
/// <strong><see cref="CoreInteractionFramework.ListBoxStateMachineItem"/></strong> objects that
/// are partially or completely visible.
/// </summary>
/// <returns>The list box items that are visible in the viewport.</returns>
/// <example>
/// <para>
/// In this code example, the <strong>GetVisibleItems</strong> method retrieves the
/// collection of visible list box items and iterates over them to determine their
/// respective selected states and take appropriate action.
/// </para>
/// <code source="Core\Framework\StarshipArsenal\MainGameFrame.cs"
/// region="Button 2" title="Button 2" lang="cs" />
/// </example>
public ListBoxStateMachineItemCollection GetVisibleItems()
{
ListBoxStateMachineItemCollection visibleItems = new ListBoxStateMachineItemCollection(this);
foreach (ListBoxStateMachineItem item in items)
{
if (item.IsVisible)
{
visibleItems.Add(item);
}
}
return visibleItems;
}
/// <summary>
/// Creates an initialized instance of a
/// <strong><see cref="ListBoxStateMachine"/></strong> object with the specified parameters.
/// </summary>
/// <param name="controller">The <strong>UIController</strong> object that dispatches hit testing.</param>
/// <param name="numberOfPixelsInHorizontalAxis">
/// The number of pixels that this control occupies horizontally.
/// For more information, see <strong><see cref="P:CoreInteractionFramework.UIElementStateMachine.NumberOfPixelsInHorizontalAxis">
/// NumberOfPixelsInHorizontalAxis</see></strong>.
/// </param>
/// <param name="numberOfPixelsInVerticalAxis">
/// The number of pixels that this control occupies vertically.
/// For more information, see <strong><see cref="P:CoreInteractionFramework.UIElementStateMachine.NumberOfPixelsInVerticalAxis">
/// NumberOfPixelsInVerticalAxis</see></strong>.
/// </param>
public ListBoxStateMachine(UIController controller,
int numberOfPixelsInHorizontalAxis,
int numberOfPixelsInVerticalAxis)
: base(controller, numberOfPixelsInHorizontalAxis, numberOfPixelsInVerticalAxis)
{
scrollAdapter = new ScrollAdapter(controller, this);
scrollAdapter.ViewportChanged += OnScrollAdapterViewportChanged;
ListBoxMode = ListBoxMode.Selection;
// Create container objects.
items = new ListBoxStateMachineItemCollection(this);
selectedItems = new ListBoxStateMachineItemCollection(this);
contactTargetEventContactIds = new Dictionary<int, ContactTargetEvent>();
capturedItemContactIds = new Dictionary<int, ListBoxStateMachineItem>();
items.ListBoxItemRemoved += OnListBoxItemRemoved;
items.ListBoxItemAdded += OnListBoxItemAdded;
selectedItems.ListBoxItemAdded += OnSelectedItemsListBoxItemAdded;
selectedItems.ListBoxItemRemoved += OnSelectedItemsListBoxItemRemoved;
}
