feat: Update package.json to 1.2.1

Fix compatibility for less than Unity 2021.3

.github/workflows/package.yaml

@@ -28,9 +28,13 @@ jobs:
 
       # Build
       - name: Build .unitypackage
-        uses: game-ci/unity-builder@v2
+        uses: game-ci/unity-builder@v4
+        env:
+          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
+          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
+          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
         with:
-          unityVersion: 2020.3.8f1
+          unityVersion: 2021.3.29f1
           buildMethod: MackySoft.PackageTools.Editor.UnityPackageExporter.Export
 
       # Upload

.github/workflows/release.yaml

@@ -61,10 +61,10 @@ jobs:
     needs: [update-packagejson]
     strategy:
       matrix:
-        unity: ["2020.3.8f1"]
+        unity: ["2021.3.29f1"]
         include:
-          - unityVersion: 2020.3.8f1
-            license: UNITY_LICENSE_2020
+          - unityVersion: 2021.3.29f1
+            license: UNITY_LICENSE
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
@@ -74,9 +74,11 @@ jobs:
           ref: ${{ needs.update-packagejson.outputs.sha }}
 
       - name: Export unitypackage
-        uses: game-ci/unity-builder@v2
+        uses: game-ci/unity-builder@v4
         env:
-          UNITY_LICENSE: ${{ secrets[matrix.license] }}
+          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
+          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
+          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
         with:
           projectPath: .
           unityVersion: ${{ matrix.unityVersion }}

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/CopyAndPasteProperty.cs

@@ -0,0 +1,67 @@
+// NOTE: managedReferenceValue getter is available only in Unity 2021.3 or later.
+#if UNITY_2021_3_OR_NEWER
+using UnityEditor;
+using UnityEngine;
+
+namespace MackySoft.SerializeReferenceExtensions.Editor
+{
+	public static class CopyAndPasteProperty
+	{
+
+		const string kCopiedPropertyPathKey = "SerializeReferenceExtensions.CopiedPropertyPath";
+		const string kClipboardKey = "SerializeReferenceExtensions.CopyAndPasteProperty";
+
+		static readonly GUIContent kPasteContent = new GUIContent("Paste Property");
+
+		[InitializeOnLoadMethod]
+		static void Initialize ()
+		{
+			EditorApplication.contextualPropertyMenu += OnContextualPropertyMenu;
+		}
+
+		static void OnContextualPropertyMenu (GenericMenu menu, SerializedProperty property)
+		{
+			if (property.propertyType == SerializedPropertyType.ManagedReference)
+			{
+				// NOTE: When the callback function is called, the SerializedProperty is rewritten to the property that was being moused over at the time,
+				// so a new SerializedProperty instance must be created.
+				SerializedProperty clonedProperty = property.Copy();
+
+				menu.AddItem(new GUIContent($"Copy \"{property.propertyPath}\" property"), false, Copy, clonedProperty);
+
+				string copiedPropertyPath = SessionState.GetString(kCopiedPropertyPathKey, string.Empty);
+				if (!string.IsNullOrEmpty(copiedPropertyPath))
+				{
+					menu.AddItem(new GUIContent($"Paste \"{copiedPropertyPath}\" property"), false, Paste, clonedProperty);
+				}
+				else
+				{
+					menu.AddDisabledItem(kPasteContent);
+				}
+			}
+		}
+
+		static void Copy (object customData)
+		{
+			SerializedProperty property = (SerializedProperty)customData;
+			string json = JsonUtility.ToJson(property.managedReferenceValue);
+			SessionState.SetString(kCopiedPropertyPathKey, property.propertyPath);
+			SessionState.SetString(kClipboardKey, json);
+		}
+
+		static void Paste (object customData)
+		{
+			SerializedProperty property = (SerializedProperty)customData;
+			string json = SessionState.GetString(kClipboardKey, string.Empty);
+			if (string.IsNullOrEmpty(json))
+			{
+				return;
+			}
+
+			Undo.RecordObject(property.serializedObject.targetObject, "Paste Property");
+			JsonUtility.FromJsonOverwrite(json, property.managedReferenceValue);
+			property.serializedObject.ApplyModifiedProperties();
+		}
+	}
+}
+#endif

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/CopyAndPasteProperty.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 734d3eb8da4785b49919aea6db62d877
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/ManagedReferenceUtility.cs

@@ -2,14 +2,32 @@
 using System;
 using System.Reflection;
 using UnityEditor;
+using UnityEngine;
 
 namespace MackySoft.SerializeReferenceExtensions.Editor {
 	public static class ManagedReferenceUtility {
 
 		public static object SetManagedReference (this SerializedProperty property,Type type) {
-			object obj = (type != null) ? Activator.CreateInstance(type) : null;
-			property.managedReferenceValue = obj;
-			return obj;
+			object result = null;
+
+#if UNITY_2021_3_OR_NEWER
+			// NOTE: managedReferenceValue getter is available only in Unity 2021.3 or later.
+			if (property.managedReferenceValue != null)
+			{
+				// Restore an previous values from json.
+				string json = JsonUtility.ToJson(property.managedReferenceValue);
+				result = JsonUtility.FromJson(json, type);
+			}
+#endif
+
+			if (result == null)
+			{
+				result = (type != null) ? Activator.CreateInstance(type) : null;
+			}
+			
+			property.managedReferenceValue = result;
+			return result;
+
 		}
 
 		public static Type GetType (string typeName) {

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/package.json

@@ -1,8 +1,9 @@
 {
 	"name": "com.mackysoft.serializereference-extensions",
 	"displayName": "SerializeReference Extensions",
-	"version": "1.1.9",
-	"unity": "2019.4",
+	"author": { "name": "MackySoft", "url": "https://github.com/mackysoft" },
+	"version": "1.2.1",
+	"unity": "2021.3",
 	"description": "Provide popup to specify the type of the field serialized by the [SerializeReference] attribute in the inspector.",
 	"keywords": [ "SerializeReference", "Editor" ],
 	"license": "MIT",

README.md

@@ -15,6 +15,9 @@ The `SubclassSelector` attribute allows you to easily set subclasses of those ab
 - Easily set subclass by popup.
 - **[New]** Type finding by fuzzy finder.
 - **[New]** Override the type name and path by the `AddTypeMenu` attribute.
+- **[New]** Restore values of previous object from JSON when subclass is changed.
+- **[New]** Copy & Paste the subclass properties.
+- **[New]** Available `CustomPropertyDrawer` for subclasses.
 
 ## 📥 Installation