Merge branch 'ext-events-improvements'

Editor/Helpers/AssetHelper.cs

@@ -0,0 +1,59 @@
+namespace SolidUtilities.Editor
+{
+    using System;
+    using Editor;
+    using JetBrains.Annotations;
+    using SolidUtilities;
+    using UnityEditor;
+
+    public static class AssetHelper
+    {
+        /// <summary>
+        /// Gets the GUID of an asset where the type is located.
+        /// </summary>
+        /// <param name="type">Type to search for in assets.</param>
+        /// <param name="GUID">GUID of the asset where the type is located, or <c>null</c> if the asset was not found.</param>
+        /// <param name="monoScript">MonoScript of the asset where the type is located, or <c>null</c> if the asset was not found.</param>
+        /// <returns><c>true</c> if the asset with the specified type was found.</returns>
+        [PublicAPI]
+        [ContractAnnotation("=> true, GUID: notnull; => false, GUID: null")]
+        public static bool GetAssetDetails(Type type, [CanBeNull] out string GUID, out MonoScript monoScript)
+        {
+            GUID = string.Empty;
+            monoScript = null;
+
+            if (type == null)
+                return false;
+
+            if (type.IsGenericType)
+                type = type.GetGenericTypeDefinition();
+
+            string typeNameWithoutSuffix = type.Name.StripGenericSuffix();
+
+            foreach (string guid in AssetDatabase.FindAssets($"t:MonoScript {typeNameWithoutSuffix}"))
+            {
+                string assetPath = AssetDatabase.GUIDToAssetPath(guid);
+                var asset = AssetDatabase.LoadAssetAtPath<MonoScript>(assetPath);
+
+                if (asset is null || asset.GetClassType(typeNameWithoutSuffix) != type)
+                    continue;
+
+                GUID = guid;
+                monoScript = asset;
+                return true;
+            }
+
+            return false;
+        }
+
+        [NotNull]
+        public static string GetClassGUID(Type type) =>
+            GetAssetDetails(type, out string guid, out MonoScript _) ? guid : string.Empty;
+
+        public static MonoScript GetMonoScriptFromType(Type type)
+        {
+            GetAssetDetails(type, out string _, out MonoScript monoScript);
+            return monoScript;
+        }
+    }
+}