Use plugin Id instead of __file__ for XmlMaterialProfile

CURA-6255

plugins/XmlMaterialProfile/PluginInfo.py

@@ -0,0 +1,15 @@
+from UM.PluginObject import PluginObject
+
+
+class PluginInfo(PluginObject):
+    __instance = None # type: PluginInfo
+
+    def __init__(self, *args, **kwags):
+        super().__init__(*args, **kwags)
+        if PluginInfo.__instance is not None:
+            raise RuntimeError("Try to create singleton '%s' more than once" % self.__class__.__name__)
+        PluginInfo.__instance = self
+
+    @classmethod
+    def getInstance(cls, *args, **kwargs) -> "USBPrinterOutputDeviceManager":
+        return cls.__instance

plugins/XmlMaterialProfile/XmlMaterialProfile.py

@@ -9,6 +9,7 @@ import sys
 from typing import Any, Dict, List, Optional, Tuple, cast, Set, Union
 import xml.etree.ElementTree as ET
 
+from UM.PluginRegistry import PluginRegistry
 from UM.Resources import Resources
 from UM.Logger import Logger
 import UM.Dictionary
@@ -19,6 +20,7 @@ from UM.ConfigurationErrorMessage import ConfigurationErrorMessage
 from cura.CuraApplication import CuraApplication
 from cura.Machines.ContainerTree import ContainerTree
 from cura.Machines.VariantType import VariantType
+from plugins.XmlMaterialProfile import PluginInfo
 
 try:
     from .XmlMaterialValidator import XmlMaterialValidator
@@ -1068,7 +1070,9 @@ class XmlMaterialProfile(InstanceContainer):
     #   This loads the mapping from a file.
     @classmethod
     def getProductIdMap(cls) -> Dict[str, List[str]]:
-        product_to_id_file = os.path.join(os.path.dirname(sys.modules[cls.__module__].__file__), "product_to_id.json")
+        plugin_id = PluginInfo.getInstance().getPluginId()
+        plugin_path = PluginRegistry.getInstance().getPluginPath(plugin_id)
+        product_to_id_file = os.path.join(plugin_path, "product_to_id.json")
         with open(product_to_id_file, encoding = "utf-8") as f:
             product_to_id_map = json.load(f)
         product_to_id_map = {key: [value] for key, value in product_to_id_map.items()}

plugins/XmlMaterialProfile/__init__.py

@@ -1,6 +1,6 @@
 # Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
-
+from plugins.XmlMaterialProfile.PluginInfo import PluginInfo
 from . import XmlMaterialProfile
 from . import XmlMaterialUpgrader
 
@@ -46,4 +46,5 @@ def register(app):
 
     return {"version_upgrade": upgrader,
             "settings_container": XmlMaterialProfile.XmlMaterialProfile("default_xml_material_profile"),
+            "plugin_info": PluginInfo()
             }