fix addon pref (#740)

molecularnodes/entities/molecule/ui.py

@@ -19,13 +19,7 @@
 from ...style import STYLE_ITEMS
 
 
-def addon_preferences() -> bpy.types.AddonPreferences:
-    try:
-        return bpy.context.preferences.addons[__package__].preferences
-    except KeyError:
-        return bpy.context.preferences.addons[
-            "bl_ext.vscode_development.molecularnodes"
-        ].preferences
+from ...pref import addon_preferences
 
 
 def parse(filepath) -> Molecule:

molecularnodes/pref.py

@@ -6,6 +6,19 @@
 CACHE_DIR = str(Path("~", "MolecularNodesCache").expanduser())
 
 
+def addon_preferences(
+    context: bpy.types.Context | None = None,
+) -> bpy.types.AddonPreferences:
+    if context is None:
+        context = bpy.context
+    try:
+        return context.preferences.addons[__package__].preferences
+    except KeyError:
+        return context.preferences.addons[
+            "bl_ext.vscode_development.molecularnodes"
+        ].preferences
+
+
 class MN_OT_Template_Install(bpy.types.Operator):
     bl_idname = "mn.template_install"
     bl_label = "Install Template"
@@ -54,6 +67,14 @@ class MolecularNodesPreferences(bpy.types.AddonPreferences):
 
     def draw(self, context):
         layout = self.layout
+        layout.label(
+            text="Where and if to store downloaded files for faster subsequent loading:"
+        )
+        row = layout.row()
+        row.prop(self, "cache_download", text="")
+        col = row.column()
+        col.prop(self, "cache_dir")
+        col.enabled = self.cache_download
         layout.label(
             text="Install the Molecular Nodes template file, to start Blender with useful default settings"
         )
@@ -65,11 +86,6 @@ def draw(self, context):
 
         row.operator("mn.template_install", text=text)
         row.operator("mn.template_uninstall")
-        row = layout.row()
-        row.prop(self, "cache_download", text="")
-        col = row.column()
-        col.prop(self, "cache_dir")
-        col.enabled = self.cache_download
 
 
 CLASSES = [MN_OT_Template_Install, MN_OT_Template_Uninstall, MolecularNodesPreferences]