namespace CustomsComponentsVar2;

public partial class CustomCheckedListBox : UserControl
{
	private event EventHandler? _selectedChanged;
	public CustomCheckedListBox()
	{
		InitializeComponent();
	}

	public string SelectedElement
	{
		get
		{
			if (checkedListBox.Items.Count == 0 || checkedListBox.Items == null)
			{
				return String.Empty;
			}
			return checkedListBox.Items.ToString();
		}
		set
		{
			if (checkedListBox.Items.Contains(value))
			{
				checkedListBox.SelectedItem = value;
			}
		}
	}

	/// <summary>
	/// Добавить элементы
	/// </summary>
	/// <param name="s"></param>
	public void addElements(List<string> s)
	{
		checkedListBox.Items.Clear();
		checkedListBox.Items.AddRange(s.ToArray());
	}

	/// <summary>
	/// Выбран элемент
	/// </summary>
	/// <param name="sender"></param>
	/// <param name="e"></param>
	private void onItemCheck(object sender, ItemCheckEventArgs e)
	{
		_selectedChanged?.Invoke(this, EventArgs.Empty);
	}

	/// <summary>
	/// Изменение индекса выбранного элемента
	/// </summary>
	/// <param name="sender"></param>
	/// <param name="e"></param>
	private void checkedListBox_SelectedIndexChanged(object sender, EventArgs e)
	{
		if (checkedListBox.CheckedItems.Count > 1)
		{
			foreach (int index in checkedListBox.CheckedIndices)
			{
				if (index != checkedListBox.SelectedIndex)
				{
					checkedListBox.SetItemChecked(index, false);
				}
			}
		}
		_selectedChanged?.Invoke(sender, e);
	}
}