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Assets/00.StaryEvo/Runtime/BindableProperty/BindableProperty.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Stary.Evo
+{
+
+     public interface IBindableProperty<T> : IReadonlyBindableProperty<T>
+    {
+        new T Value { get; set; }
+        void SetValueWithoutEvent(T newValue);
+    }
+
+    public interface IReadonlyBindableProperty<T>
+    {
+        T Value { get; }
+        
+        IUnRegister RegisterWithInitValue(Action<T> action);
+        void UnRegister(Action<T> onValueChanged);
+        IUnRegister Register(Action<T> onValueChanged);
+    }
+
+    public class BindableProperty<T> : IBindableProperty<T>
+    {
+        public BindableProperty(T defaultValue = default)
+        {
+            mValue = defaultValue;
+        }
+
+        protected T mValue;
+
+        public T Value
+        {
+            get => GetValue();
+            set
+            {
+                if (value == null && mValue == null) return;
+                if (value != null && value.Equals(mValue)) return;
+
+                SetValue(value);
+                mOnValueChanged?.Invoke(value);
+            }
+        }
+
+        protected virtual void SetValue(T newValue)
+        {
+            mValue = newValue;
+        }
+
+        protected virtual T GetValue()
+        {
+            return mValue;
+        }
+
+        public void SetValueWithoutEvent(T newValue)
+        {
+            mValue = newValue;
+        }
+
+        private Action<T> mOnValueChanged = (v) => { };
+
+        public IUnRegister Register(Action<T> onValueChanged)
+        {
+            mOnValueChanged += onValueChanged;
+            return new BindablePropertyUnRegister<T>()
+            {
+                BindableProperty = this,
+                OnValueChanged = onValueChanged
+            };
+        }
+
+        public IUnRegister RegisterWithInitValue(Action<T> onValueChanged)
+        {
+            onValueChanged(mValue);
+            return Register(onValueChanged);
+        }
+
+        public static implicit operator T(BindableProperty<T> property)
+        {
+            return property.Value;
+        }
+
+        public override string ToString()
+        {
+            return Value.ToString();
+        }
+
+        public void UnRegister(Action<T> onValueChanged)
+        {
+            mOnValueChanged -= onValueChanged;
+        }
+    }
+
+    public class BindablePropertyUnRegister<T> : IUnRegister
+    {
+        public BindableProperty<T> BindableProperty { get; set; }
+
+        public Action<T> OnValueChanged { get; set; }
+
+        public void UnRegister()
+        {
+            BindableProperty.UnRegister(OnValueChanged);
+
+            BindableProperty = null;
+            OnValueChanged = null;
+        }
+    }
+}

Assets/00.StaryEvo/Runtime/BindableProperty/BindableProperty.cs.meta

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