public void clearItems()
{
if (_items.Count == 0)
{
return;
}
_items.Clear();
_selection.clear();
invalidateHierarchy();
}
/// <summary>
/// Sets the selection to only the passed item, if it is a possible choice.
/// </summary>
/// <returns>The selected.</returns>
/// <param name="item">Item.</param>
public void setSelected(T item)
{
if (_items.Contains(item))
{
_selection.set(item);
}
else if (_selection.getRequired() && _items.Count > 0)
{
_selection.set(_items[0]);
}
else
{
_selection.clear();
}
}
/// <summary>
/// Sets the selection to only the passed item, if it is a possible choice.
/// </summary>
/// <param name="item">Item.</param>
public ListBox <T> setSelected(T item)
{
if (_items.Contains(item))
{
_selection.set(item);
}
else if (_selection.getRequired() && _items.Count > 0)
{
_selection.set(_items[0]);
}
else
{
_selection.clear();
}
return(this);
}