Move code using ui index from data to ui #4028

As UI indices changes doesn't trigger data.py updates and information on screen is not synced with the active item anymore.

src/blenderbim/blenderbim/bim/module/geometry/data.py

@@ -101,8 +101,6 @@ class RepresentationItemsData:
     def load(cls):
         cls.data = {
             "total_items": cls.total_items(),
-            "active_surface_style": cls.active_surface_style(),
-            "active_layer": cls.active_layer(),
         }
         cls.is_loaded = True
 
@@ -124,18 +122,6 @@ class RepresentationItemsData:
                     result += 1
         return result
 
-    @classmethod
-    def active_surface_style(cls):
-        props = bpy.context.active_object.BIMGeometryProperties
-        if props.active_item_index < len(props.items):
-            return props.items[props.active_item_index].surface_style
-
-    @classmethod
-    def active_layer(cls):
-        props = bpy.context.active_object.BIMGeometryProperties
-        if props.active_item_index < len(props.items):
-            return props.items[props.active_item_index].layer
-
 
 class ConnectionsData:
     data = {}

src/blenderbim/blenderbim/bim/module/geometry/ui.py

@@ -181,17 +181,21 @@ class BIM_PT_representation_items(Panel):
 
         self.layout.template_list("BIM_UL_representation_items", "", props, "items", props, "active_item_index")
 
+        item_is_active = props.active_item_index < len(props.items)
+        if item_is_active:
+            surface_style = props.items[props.active_item_index].surface_style
+            presentation_layer = props.items[props.active_item_index].layer
+        else:
+            surface_style, presentation_layer = None, None
+
         row = self.layout.row()
-        if RepresentationItemsData.data["active_surface_style"]:
-            row.label(text=RepresentationItemsData.data["active_surface_style"], icon="MATERIAL")
+        if surface_style:
+            row.label(text=surface_style, icon="MATERIAL")
         else:
             row.label(text="No Surface Style", icon="MESH_UVSPHERE")
 
         row = self.layout.row()
-        if RepresentationItemsData.data["active_layer"]:
-            row.label(text=RepresentationItemsData.data["active_layer"], icon="STICKY_UVS_LOC")
-        else:
-            row.label(text="No Presentation Layer", icon="STICKY_UVS_LOC")
+        row.label(text=presentation_layer or "No Presentation Layer", icon="STICKY_UVS_LOC")
 
 
 class BIM_PT_connections(Panel):