feat(UI): Expose text slider refresh

Author: jcs090218

Assets/JCSUnity/Scripts/UI/Slider/JCS_SliderTextDisplay.cs

@@ -43,29 +43,49 @@ public class JCS_SliderTextDisplay : JCS_TextObject
 
         /* Functions */
 
-        private void Awake()
+        private void OnEnable()
         {
             AddListener();
         }
 
+        private void OnDisable()
+        {
+            RemoveListener();
+        }
+
+#if UNITY_EDITOR
         private void OnValidate()
         {
-            AddListener();
+            Refresh();
         }
+#endif
 
         private void AddListener()
         {
-            if (mSlider == null)
-                return;
-
-            mSlider.onValueChanged.AddListener(delegate { OnValueChanged(); });
+            mSlider?.onValueChanged.AddListener(OnValueChanged);
 
             // Call once.
-            OnValueChanged();
+            Refresh();
+        }
+
+        private void RemoveListener()
+        {
+            mSlider?.onValueChanged.RemoveListener(OnValueChanged);
+        }
+
+        private void OnValueChanged(float val)
+        {
+            Refresh();
         }
 
-        private void OnValueChanged()
+        /// <summary>
+        /// Refresh the text once.
+        /// </summary>
+        public void Refresh()
         {
+            if (mSlider == null)
+                return;
+
             text = string.Format(mFormat,
                     Math.Round(mSlider.value, mRoundPlace),
                     Math.Round(mSlider.maxValue, mRoundPlace),

docs/ScriptReference/UI/Slider/JCS_SliderTextDisplay.md

@@ -9,3 +9,9 @@ Text that display slider's value.
 | mSlider     | To update the text along with this slider's value. |
 | mFormat     | Format text to display.                            |
 | mRoundPlace | Place you want to round the decimal.               |
+
+## Functions
+
+| Name    | Description            |
+|:--------|:-----------------------|
+| Refresh | Refresh the text once. |