namespace WinFormsLibrary
{
	public partial class DropDownList : UserControl
	{
		public DropDownList()
		{
			InitializeComponent();
		}
		public void Clear()
		{
			comboBox.Items.Clear();
		}
		public void LoadValues(List<string> values)
		{
			if (values.Count == 0)
			{
				return;
			}
			comboBox.Items.AddRange(values.ToArray());
		}
			
		public string Selected
		{
			get
			{
				if(comboBox.Items.Count == 0)
				{
					return "";
				}
				if(comboBox.SelectedItem == null)
				{
					return "";
				}
				return comboBox.SelectedItem.ToString()!;
			}
			set
			{
				if (comboBox.Items.Contains(value)) 
				{
					comboBox.SelectedItem = value;
				}
			}
		}
		public ComboBox.ObjectCollection comboBoxItems
		{
			get { return comboBox.Items; }
		}
		private EventHandler _onValueChanged;
		public event EventHandler ValueChanged
		{
			add { _onValueChanged += value; }
			remove { _onValueChanged -= value; }
		}

		private void comboBox_SelectedIndexChanged(object sender, EventArgs e)
		{
			_onValueChanged?.Invoke(sender, e);
		}
	}
	}