GUI: demonstrate that blender has recieved results of the request

__init__.py

@@ -10,17 +10,18 @@ class PackageSettings(bpy.types.PropertyGroup):
     url = bpy.props.StringProperty(name="URL")
 
 # class PackageManager:
-    # # For some reason accessing 'settings' PointerProperty via wm.package_manager.settings gives a value error
-    # # but accessing it when not stored in this class (wm.package_manager_settings) is fine?
-    # # settings = bpy.props.PointerProperty(type=PackageSettings)
-    # pipes = []
+#     # For some reason accessing *Property objects stored in this class gives a TypeError:
+#     # UILayout.prop(): error with argument 1, "data" -  Function.data expected a AnyType type, not tuple
+#     # But accessing them when not stored in a class or dict is fine?
+#     settings = bpy.props.PointerProperty(type=PackageSettings)
+#     last_response_code = bpy.props.PointerProperty(type=bpy.types.StringProperty)
 
 def register():
     from . import (pkg_ops, pkg_ui)
 
     bpy.utils.register_class(PackageSettings)
-    # bpy.types.WindowManager.package_manager = PackageManager()
     bpy.types.WindowManager.package_manager_settings = bpy.props.PointerProperty(type=PackageSettings)
+    # bpy.types.WindowManager.pm_last_response_code = bpy.props.StringProperty(name="pm_last_response_code")
     pkg_ops.register()
     pkg_ui.register()
 
@@ -30,5 +31,6 @@ def unregister():
     pkg_ops.unregister()
     pkg_ui.unregister();
     bpy.utils.unregister_class(PackageSettings)
-    del bpy.types.WindowManager.package_manager
+    del bpy.types.WindowManager.package_manager_settings
+    # del bpy.types.WindowManager.pm_last_response_code
 

pkg_ops.py

@@ -42,6 +42,7 @@ class SubprocessOperatorMixin:
             else:
                 newdata = None
         except EOFError:
+            print("done polling")
             return {'FINISHED'}
 
         if newdata is not None:
@@ -52,13 +53,16 @@ class PACKAGE_OT_fetch(SubprocessOperatorMixin, bpy.types.Operator):
     bl_idname = "package.fetch"
     bl_label = "Update package list(s)"
 
+    last_response = None
+
     def __init__(self):
         SubprocessOperatorMixin.__init__(self)
         settings = bpy.context.window_manager.package_manager_settings
         self.subprocess = Process(target=blenderpack.fetch, args=(settings.url, self.pipe))
 
     def handle_response(self, resp):
-        print("your response:", resp)
+        self.__class__.last_response = resp
+        self.report({'INFO'}, "Request returned %s" % self.__class__.last_response)
 
     def execute(self, context):
         return {'FINISHED'}

pkg_ui.py

@@ -13,12 +13,21 @@ class USERPREF_PT_packages(bpy.types.Panel):
         return (userpref.active_section == 'PACKAGES')
 
     def draw(self, context):
+        wm = context.window_manager
+        # pm = wm.package_manager
+        # see comment in __init__.py
+        pm_settings = wm.package_manager_settings
+        # pm_last_code = wm.pm_last_response_code
         layout = self.layout
 
         row = layout.row()
-        row.prop(context.window_manager.package_manager_settings, "url")
+        row.prop(pm_settings, "url")
         row.operator(pkg_ops.PACKAGE_OT_fetch.bl_idname, text="Fetch")
 
+        row = layout.row()
+        # just a demonstration
+        row.label(text="Last response: %s" % pkg_ops.PACKAGE_OT_fetch.last_response)
+
 def register():
     bpy.utils.register_class(USERPREF_PT_packages)