/// <summary>
/// Add a menu item directly.
/// </summary>
/// <param name="text">Text to display on the menu item.</param>
/// <param name="value">Value selected by the menu item.</param>
public void AddDropdownItem(string text, T value)
{
if (itemMap.ContainsKey(value))
{
throw new ArgumentException($"The item {value} already exists in this {nameof(Dropdown<T>)}.");
}
var newItem = new DropdownMenuItem <T>(text, value, () =>
{
if (!Current.Disabled)
{
Current.Value = value;
}
Menu.State = MenuState.Closed;
});
Menu.Add(newItem);
itemMap[value] = newItem;
}
/// <summary> /// Shows an item from this <see cref="DropdownMenu"/>. /// </summary> /// <param name="item">The item to show.</param> public void HideItem(DropdownMenuItem <T> item) => Children.FirstOrDefault(c => c.Item == item)?.Hide();
/// <summary> /// Hides an item from this <see cref="DropdownMenu"/> /// </summary> /// <param name="item"></param> public void ShowItem(DropdownMenuItem <T> item) => Children.FirstOrDefault(c => c.Item == item)?.Show();
/// <summary>
/// Selects an item from this <see cref="DropdownMenu"/>.
/// </summary>
/// <param name="item">The item to select.</param>
public void SelectItem(DropdownMenuItem <T> item)
{
Children.OfType <DrawableDropdownMenuItem>().ForEach(c => c.IsSelected = c.Item == item);
}
