Add Use Parent Context option to ZenjectBinding

UnityProject/Assets/Plugins/Zenject/Source/Install/Contexts/Context.cs

@@ -262,7 +262,7 @@ protected void InstallSceneBindings(List<MonoBehaviour> injectableMonoBehaviours
                     }
                 }
 
-                if (binding.Context == this)
+                if (binding.Context == this || binding.ParentContext == this)
                 {
                     InstallZenjectBinding(binding);
                 }

UnityProject/Assets/Plugins/Zenject/Source/Install/Contexts/SceneContext.cs

@@ -321,6 +321,21 @@ void InstallBindings(List<MonoBehaviour> injectableMonoBehaviours)
             {
                 decoratorContext.InstallDecoratorSceneBindings();
             }
+
+            foreach (var binding in Resources.FindObjectsOfTypeAll<ZenjectBinding>())
+            {
+                var parent = binding.transform.parent;
+                if (parent == null)
+                    continue;
+
+                var siblingContext = binding.GetComponent<GameObjectContext>();
+                var parentContext = parent.GetComponentInParent<Context>();
+
+                if (siblingContext != null && parentContext != null && binding.UseParentContext)
+                {
+                    binding.ParentContext = parentContext;
+                }
+            }
 
             InstallSceneBindings(injectableMonoBehaviours);
 

UnityProject/Assets/Plugins/Zenject/Source/Install/ZenjectBinding.cs

@@ -28,6 +28,12 @@ public class ZenjectBinding : MonoBehaviour
         [SerializeField]
         BindTypes _bindType = BindTypes.Self;
 
+        [Tooltip("When set and this binding is on the same object as a GameObjectContext, this will bind the given components to it as normal but also any parent context. This is useful when using ZenjectBinding to bind a nested facade which has its own GameObjectContext.  If your ZenjectBinding is for a component that is not a nested facade then it is not necessary to check this.")]
+        [SerializeField] 
+        bool _useParentContext;
+
+        Context _parentContext;
+
         public bool UseSceneContext
         {
             get { return _useSceneContext; }
@@ -54,6 +60,18 @@ public BindTypes BindType
             get { return _bindType; }
         }
 
+        public bool UseParentContext
+        {
+            get => _useParentContext;
+            set => _useParentContext = value;
+        }
+
+        public Context ParentContext
+        {
+            get => _parentContext;
+            set => _parentContext = value;
+        }
+
         public void Start()
         {
             // Define this method so we expose the enabled check box