Expandable Inline Editor for Unity Objects (#32)

* expandable inline editor for unity objects

* package references added

* pushable layer added

* fixes for ExpandablePropertyDrawer and items in item adapters now expandable

Author: rob1997

Packages/com.ekaka.core/Editor/ExpandablePropertyDrawer.cs

@@ -0,0 +1,46 @@
+using Core.Common;
+using UnityEditor;
+using UnityEngine;
+
+namespace Core.Editor
+{
+    [CustomPropertyDrawer(typeof(ExpandableAttribute))]
+    public class ExpandablePropertyDrawer : PropertyDrawer
+    {
+        private UnityEditor.Editor _editor;
+        
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            float width = position.width;
+            
+            position.width = 0.05f * width;
+
+            property.isExpanded = EditorGUI.Foldout(position, property.isExpanded, GUIContent.none);
+            
+            position.x += position.width;
+            
+            position.width = width - position.width;
+            
+            EditorGUI.PropertyField(position, property, label, true);
+
+            if (property.objectReferenceValue == null)
+            {
+                return;
+            }
+            
+            if (property.isExpanded)
+            {
+                if (!_editor)
+                {
+                    UnityEditor.Editor.CreateCachedEditor(property.objectReferenceValue, null, ref _editor);
+                }
+                
+                EditorGUILayout.BeginVertical(GUI.skin.box);
+                
+                _editor.OnInspectorGUI();
+                
+                EditorGUILayout.EndVertical();
+            }
+        }
+    }
+}

Packages/com.ekaka.core/Editor/ExpandablePropertyDrawer.cs.meta

@@ -0,0 +1,17 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Core.Common
+{
+    [AttributeUsage(AttributeTargets.Field)]
+
+    public class ExpandableAttribute : PropertyAttribute
+    {
+        public ExpandableAttribute()
+        {
+            
+        }
+    }
+}

Packages/com.ekaka.core/Runtime/Common/ExpandableAttribute.cs

@@ -12,7 +12,7 @@ namespace Inventory.Main.Item
     [Serializable]
     public abstract class Item<T> : IItem where T : ItemReference
     {
-        [SerializeField] protected T reference;
+        [SerializeField, Expandable] protected T reference;
 
         [SerializeField] [HideInInspector] private string id = Utils.NewGuid();
 

Packages/com.ekaka.core/Runtime/Common/ExpandableAttribute.cs.meta

@@ -1883,6 +1883,7 @@ MonoBehaviour:
   <TargetGroup>k__BackingField: {fileID: 5590362405879292995}
   <Targeter>k__BackingField: {fileID: 0}
   <Vitality>k__BackingField:
+    <Immutable>k__BackingField: 0
     <LowerLimit>k__BackingField: 0
     <FullValue>k__BackingField: 100
     <Death>k__BackingField: {fileID: 4702685486435802194}
@@ -1899,6 +1900,7 @@ MonoBehaviour:
           <Invulnerable>k__BackingField: 0
           <Value>k__BackingField: 0
   <Endurance>k__BackingField:
+    <Immutable>k__BackingField: 0
     <LowerLimit>k__BackingField: 0
     <FullValue>k__BackingField: 100
     <RecoveryRate>k__BackingField: 2
@@ -1933,7 +1935,7 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   pushLayers:
     serializedVersion: 2
-    m_Bits: 64
+    m_Bits: 128
   canPush: 1
   interpolate: 1
   strength: 5