Enhance image editing tests and functionality

- Added parameterized tests for image edit replacement to ensure alpha mode preservation.
- Refactored existing tests to utilize new image editing methods and improve clarity.
- Introduced new tests for image target functionality, ensuring proper handling of shared textures and context.
- Updated various tests to validate alpha mode handling across different scenarios.
- Improved undo/redo functionality in image operators to maintain state consistency.
- Added support for texture node actions, enhancing integration with Blender's node system.
- Ensured that image properties are preserved during operations and that invalid contexts are handled gracefully.

src/anyimage/menu.py

@@ -1,6 +1,7 @@
 import bpy
 
 from .common.image import is_image_empty
+from .common.image_target import active_texture_node, image_edit_owner, owner_image
 from .operators.upscale import upscale_output_size
 
 
@@ -9,8 +10,6 @@ class AnyImageImageMenu(bpy.types.Menu):
     bl_label = "AnyImage"
 
     def draw(self, context):
-        from .properties import ai_setup_label, ai_status
-
         layout = self.layout
         layout.operator_context = "INVOKE_DEFAULT"
         layout.operator(
@@ -29,37 +28,52 @@ class AnyImageImageMenu(bpy.types.Menu):
             icon="MOD_DISPLACE",
         )
         layout.separator()
+        draw_image_actions(layout, context)
+
+
+class AnyImageTextureNodeMenu(bpy.types.Menu):
+    bl_idname = "ANYIMAGE_MT_texture_node_context"
+    bl_label = "AnyImage"
+
+    def draw(self, context):
+        draw_image_actions(self.layout, context)
+
+
+def draw_image_actions(layout, context):
+    from .properties import ai_setup_label, ai_status
+
+    layout.operator_context = "INVOKE_DEFAULT"
+    layout.operator(
+        "anyimage.remove_image_background",
+        text="Remove Background",
+        icon="IMAGE_ALPHA",
+    )
+    layout.operator(
+        "anyimage.upscale_image",
+        text=upscale_menu_label(context),
+        icon="FULLSCREEN_ENTER",
+    )
+    layout.separator()
+    status = ai_status()
+    if status["ready"]:
         layout.operator(
-            "anyimage.remove_image_background",
-            text="Remove Background",
-            icon="IMAGE_ALPHA",
+            "anyimage.open_ai_environment_settings",
+            text="Settings",
+            icon="PREFERENCES",
         )
+    else:
         layout.operator(
-            "anyimage.upscale_image",
-            text=upscale_menu_label(context),
-            icon="FULLSCREEN_ENTER",
+            "anyimage.setup_ai_environment",
+            text=ai_setup_label(status),
+            icon="IMPORT",
         )
-        layout.separator()
-        status = ai_status()
-        if status["ready"]:
-            layout.operator(
-                "anyimage.open_ai_environment_settings",
-                text="Settings",
-                icon="PREFERENCES",
-            )
-        else:
-            layout.operator(
-                "anyimage.setup_ai_environment",
-                text=ai_setup_label(status),
-                icon="IMPORT",
-            )
 
 
 def upscale_menu_label(context):
-    source_object = getattr(context, "object", None)
-    if not is_image_empty(source_object):
+    owner = image_edit_owner(context)
+    if owner is None:
         return "Upscale"
-    output_size = upscale_output_size(source_object.data)
+    output_size = upscale_output_size(owner_image(owner))
     if output_size is None:
         return "Upscale"
     width, height = output_size
@@ -71,3 +85,10 @@ def draw_image_context_menu(self, context):
         return
     self.layout.menu(AnyImageImageMenu.bl_idname, text="AnyImage", icon="PLUGIN")
     self.layout.separator()
+
+
+def draw_texture_node_context_menu(self, context):
+    if active_texture_node(context) is None:
+        return
+    self.layout.menu(AnyImageTextureNodeMenu.bl_idname, text="AnyImage", icon="PLUGIN")
+    self.layout.separator()