/// <summary>
/// Increments the position in the list box.
/// </summary>
private void IncrementSelection()
{
if (ListBoxDirections.SelectedIndex == ListBoxDirections.Items.Count - 1)
{
_view.MoveCurrentToFirst();
}
else
{
_view.MoveCurrentToNext();
}
// Since the selected item was changed programmatically, scroll it into view.
if (ListBoxDirections.SelectedItem != null)
{
ListBoxDirections.ScrollIntoView(ListBoxDirections.SelectedItem);
}
}
/// <summary>
/// Decrements the position in the list box.
/// </summary>
private void DecrementSelection()
{
if (ListBoxDirections.SelectedIndex == -1)
{
_view.MoveCurrentToLast();
}
else
{
_view.MoveCurrentToPrevious();
}
// Since the selected item was changed programmatically, scroll it into view.
if (ListBoxDirections.SelectedItem != null)
{
ListBoxDirections.ScrollIntoView(ListBoxDirections.SelectedItem);
}
}
