using System.Text.RegularExpressions;

namespace WinFormsLibrary
{
	public partial class EmailTextBox : UserControl
	{
		public EmailTextBox()
		{
			InitializeComponent();
		}
		private string _pattern;
		private string example = "hello@mail.ru";
		private EventHandler _onValueChanged;

		public string Pattern
		{
			get { return _pattern; }
			set { _pattern = value; }
		}
		public string Error
		{
			get; private set;
		}
		public void setExample(string str)
		{
			Regex rg = new Regex(Pattern);
			bool address = rg.IsMatch(str);
			if (address)
			{
				example = str;
			}

		}

		public string TextBoxValue
		{
			get
			{
				Regex regex = new Regex(Pattern);
				if (regex.IsMatch(textBoxEmail.Text))
				{
					return textBoxEmail.Text;
				}
				else
				{
					Error = "Некорректный ввод";
					return null;
				}
			}
			set
			{
				Regex regex = new Regex(Pattern);
				if (regex.IsMatch(value))
				{
					textBoxEmail.Text = value;
				}
				else
				{
					Error = "Некорректный ввод";
				}
			}
		}
		private void textBoxEmail_MouseEnter(object sender, EventArgs e)
		{
			toolTipEmail.Show(example, textBoxEmail, 30, -20);
		}

		public event EventHandler ValueChanged
		{
			add { _onValueChanged += value; }
			remove { _onValueChanged -= value; }
		}

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