add kcp

Src/Unity/Scripts/UX/Library/CustomTextField.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.UIElements;
+
+namespace BITKit.UX
+{
+	public class CustomTextField : TextField
+	{
+		public const string errorUssName = "error";
+		public new class UxmlTraits : TextField.UxmlTraits
+		{
+			private readonly UxmlStringAttributeDescription m_RegexAttribute = new ()
+			{
+				name = "Regex"
+			};
+
+			public override void Init(VisualElement ve, IUxmlAttributes bag, CreationContext cc)
+			{
+				base.Init(ve, bag, cc);
+				var textField = (CustomTextField)ve;
+				textField.Regex = m_RegexAttribute.GetValueFromBag(bag, cc);
+			}
+		}
+		public new class UxmlFactory : UxmlFactory<CustomTextField, UxmlTraits> { }
+		public CustomTextField():base()
+		{
+			this.RegisterValueChangedCallback(OnValueChangedInternal);
+		}
+		public string Regex { get; set; }
+		public event Action<string> OnValueChanged; 
+		private void OnValueChangedInternal(ChangeEvent<string> evt)
+		{
+			var isMatch = string.IsNullOrEmpty(Regex) || System.Text.RegularExpressions.Regex.IsMatch(evt.newValue, Regex);
+			this.Q("unity-text-input").EnableInClassList(errorUssName, !isMatch);
+			if (isMatch)
+			{
+				OnValueChanged?.Invoke(evt.newValue);
+			}
+		}
+	}
+
+}