Merge pull request sugiany#65 from UuuNyaa/64-feature-partial-support-for-library-override-workflow

Add patching to all mmd_tools propeties

Author: UuuNyaa

mmd_tools/core/morph.py

@@ -684,9 +684,18 @@ def update_mmd_morph():
     @staticmethod
     def ensure_material_id_not_conflict():
         mat_ids_set = set()
+
+        # The reference library properties cannot be modified and bypassed in advance.
+        need_update_mat = []
         for mat in bpy.data.materials:
             if mat.mmd_material.material_id < 0:
                 continue
+            if mat.library is not None:
+                mat_ids_set.add(mat.mmd_material.material_id)
+            else:
+                need_update_mat.append(mat)
+
+        for mat in need_update_mat:
             if mat.mmd_material.material_id in mat_ids_set:
                 mat.mmd_material.material_id = max(mat_ids_set) + 1
             mat_ids_set.add(mat.mmd_material.material_id)

mmd_tools/properties/__init__.py

@@ -64,6 +64,34 @@ def __set_hide(prop, value):
 
 
 def __patch(properties):  # temporary patching, should be removed in the future
+    def __patch_override(prop: bpy.props._PropertyDeferred):
+        """Apply recursively for each mmd_tools property class annotations
+
+        # Hint for bpy.props._PropertyDeferred class
+        p = bpy.props.IntProperty(name='abc123')
+        assert isinstance(p, bpy.props._PropertyDeferred)
+        assert p.function == bpy.props.IntProperty
+        assert p.keywords == {'name': 'abc123'}
+        """
+        prop.keywords.setdefault('override', set()).add('LIBRARY_OVERRIDABLE')
+
+        if prop.function.__name__ not in {'PointerProperty', 'CollectionProperty'}:
+            return
+
+        prop_type = prop.keywords['type']
+        # The __annotations__ cannot be inherited. Manually search for base classes.
+        for inherited_type in [prop_type, *prop_type.__bases__]:
+            if not inherited_type.__module__.startswith('mmd_tools.properties'):
+                continue
+            for annotation in inherited_type.__annotations__.values():
+                if not isinstance(annotation, bpy.props._PropertyDeferred):
+                    continue
+                __patch_override(annotation)
+
+    for props in properties.values():
+        for prop in props.values():
+            __patch_override(prop)
+
     prop_obj = properties.setdefault(bpy.types.Object, {})
 
     prop_obj['select'] = bpy.props.BoolProperty(