Create LocalizedImageBinder.cs

Author: RimuruDev

LocalizedImageBinder.cs

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+#if UNITY_EDITOR
+#define UNITY_EDITOR_MODE
+#endif
+
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.Localization.Components;
+
+#if UNITY_EDITOR_MODE
+using UnityEditor;
+using UnityEditor.Events;
+#endif
+
+namespace RimuruDev
+{
+    /// <summary>
+    /// Компонент для автоматической привязки локализованных спрайтов к Image с помощью LocalizeSpriteEvent.
+    /// </summary>
+    [SelectionBase]
+    [ExecuteAlways]
+    [DisallowMultipleComponent]
+    [RequireComponent(typeof(Image))]
+    [RequireComponent(typeof(RectTransform))]
+    [RequireComponent(typeof(LocalizeSpriteEvent))]
+    [AddComponentMenu("0x_/Localization/" + nameof(LocalizedImageBinder))]
+    public sealed class LocalizedImageBinder : MonoBehaviour
+    {
+        private void Awake() =>
+            SetupBindings();
+
+        private void Reset() =>
+            SetupBindings();
+
+        private void OnDestroy()
+        {
+#if UNITY_EDITOR_MODE
+            var localizeSpriteEvent = GetComponent<LocalizeSpriteEvent>();
+            if (localizeSpriteEvent != null)
+            {
+                RemovePersistentListener(localizeSpriteEvent);
+            }
+#endif
+        }
+
+        /// <summary>
+        /// Настраивает связь между LocalizeSpriteEvent и Image.
+        /// </summary>
+        private void SetupBindings()
+        {
+            var localizeSpriteEvent = GetComponent<LocalizeSpriteEvent>();
+            var image = GetComponent<Image>();
+
+            if (localizeSpriteEvent == null || image == null)
+                return;
+
+#if UNITY_EDITOR_MODE
+            if (!HasPersistentListener(localizeSpriteEvent))
+            {
+                AddPersistentListener(localizeSpriteEvent);
+            }
+#endif
+            ClearSprite();
+
+            void ClearSprite() =>
+                image.sprite = null;
+        }
+
+#if UNITY_EDITOR_MODE
+        /// <summary>
+        /// Проверяет, добавлен ли обработчик обновления спрайта.
+        /// </summary>
+        private bool HasPersistentListener(LocalizeSpriteEvent localizeSpriteEvent)
+        {
+            for (var i = 0; i < localizeSpriteEvent.OnUpdateAsset.GetPersistentEventCount(); i++)
+            {
+                if (localizeSpriteEvent.OnUpdateAsset.GetPersistentTarget(i) == this &&
+                    localizeSpriteEvent.OnUpdateAsset.GetPersistentMethodName(i) == nameof(UpdateImageSprite))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Добавляет обработчик обновления спрайта для Image.
+        /// </summary>
+        private void AddPersistentListener(LocalizeSpriteEvent localizeSpriteEvent)
+        {
+            UnityEventTools.AddPersistentListener(localizeSpriteEvent.OnUpdateAsset, UpdateImageSprite);
+            EditorUtility.SetDirty(localizeSpriteEvent);
+        }
+
+        /// <summary>
+        /// Удаляет обработчик обновления спрайта для Image.
+        /// </summary>
+        private void RemovePersistentListener(LocalizeSpriteEvent localizeSpriteEvent)
+        {
+            for (var i = localizeSpriteEvent.OnUpdateAsset.GetPersistentEventCount() - 1; i >= 0; i--)
+            {
+                if (localizeSpriteEvent.OnUpdateAsset.GetPersistentTarget(i) == this &&
+                    localizeSpriteEvent.OnUpdateAsset.GetPersistentMethodName(i) == nameof(UpdateImageSprite))
+                {
+                    UnityEventTools.RemovePersistentListener(localizeSpriteEvent.OnUpdateAsset, i);
+                }
+            }
+
+            EditorUtility.SetDirty(localizeSpriteEvent);
+        }
+#endif
+
+        /// <summary>
+        /// Обновляет спрайт компонента Image.
+        /// </summary>
+        /// <param name="sprite">Новый локализованный спрайт.</param>
+        private void UpdateImageSprite(Sprite sprite)
+        {
+            var image = GetComponent<Image>();
+            if (image != null)
+            {
+                image.sprite = sprite;
+            }
+        }
+    }
+}