From 0acca7f4ab128ce50f7eb58bda8d8699a950386a Mon Sep 17 00:00:00 2001
From: Sergei Vakhurin <igelbox@gmail.com>
Date: Thu, 5 May 2022 01:31:09 +0300
Subject: [PATCH] fix #12: blender 3.0 clipboard errors

I have no idea how to autotest here
---
 animation_retarget/ops.py | 10 +++++-----
 tests/cases/test_ops.py   | 15 +++++++--------
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/animation_retarget/ops.py b/animation_retarget/ops.py
index dab98c8..099e8dc 100644
--- a/animation_retarget/ops.py
+++ b/animation_retarget/ops.py
@@ -3,8 +3,8 @@
 from .core import mapping_to_text, text_to_mapping, clear_mapping
 from .core import trick_blender28, need_to_trick_blender28
 
-WM = bpy.context.window_manager
-
+def GetWM():
+    return bpy.context.window_manager
 
 class OBJECT_OT_CopyMapping(bpy.types.Operator):
     bl_idname = "animation_retarget.copy_mapping"
@@ -13,7 +13,7 @@ class OBJECT_OT_CopyMapping(bpy.types.Operator):
 
     def execute(self, context):
         target_obj = context.active_object
-        WM.clipboard = mapping_to_text(target_obj)
+        GetWM().clipboard = mapping_to_text(target_obj)
         return {'FINISHED'}
 
     @classmethod
@@ -33,7 +33,7 @@ class OBJECT_OT_PasteMapping(bpy.types.Operator):
 
     def execute(self, context):
         target_obj = context.active_object
-        text_to_mapping(WM.clipboard, target_obj)
+        text_to_mapping(GetWM().clipboard, target_obj)
         return {'FINISHED'}
 
     @classmethod
@@ -41,7 +41,7 @@ def poll(cls, context):
         target_obj = context.active_object
         if (not target_obj) or (target_obj.type not in {'ARMATURE'}):
             return False
-        if not WM.clipboard:
+        if not GetWM().clipboard:
             return False
         return True
 
diff --git a/tests/cases/test_ops.py b/tests/cases/test_ops.py
index 3e932fb..46b680b 100644
--- a/tests/cases/test_ops.py
+++ b/tests/cases/test_ops.py
@@ -5,18 +5,17 @@
 from animation_retarget import ops
 
 
-class WM:
-    def __init__(self):
-        self.clipboard = ''
+class WMock:
+    clipboard = ''
 
 
 class TestOperations(utils.BaseTestCase):
     def setUp(self):
         super().setUp()
-        ops.WM = WM()
+        ops.GetWM = lambda: WMock
 
     def tearDown(self):
-        ops.WM = bpy.context.window_manager
+        ops.GetWM = lambda: bpy.context.window_manager
         super().tearDown()
 
     def test_copy(self):
@@ -37,7 +36,7 @@ def test_copy(self):
         self.assertTrue(operator.poll())
 
         operator()
-        self.assertEqual(ops.WM.clipboard, """[object]
+        self.assertEqual(WMock.clipboard, """[object]
 source = src
 
 [bone:root]
@@ -55,10 +54,10 @@ def test_paste(self):
 
         create_armature('src')
         tgt = create_armature('tgt')
-        ops.WM.clipboard = ''
+        WMock.clipboard = ''
         # the clipboard is empty
         self.assertFalse(operator.poll())
-        ops.WM.clipboard = """
+        WMock.clipboard = """
 [object]
 source=src
 [bone:root]