Fix issues with handling of root objects

formation/loader.py

@@ -167,6 +167,8 @@ class CanvasLoaderAdapter(BaseLoaderAdapter):
     def load(cls, node, builder, parent):
         canvas = BaseLoaderAdapter.load(node, builder, parent)
         for sub_node in node:
+            if sub_node.type in builder._ignore_tags:
+                continue
             # just additional options that may be needed down the line
             kwargs = {
                 "parent_node": sub_node.parent,

studio/feature/design.py

@@ -485,7 +485,7 @@ def delete(self, widget, silently=False):
             # try finding another toplevel widget that can be a root obj otherwise leave it as none
             self.root_obj = None
             for w in self.layout_strategy.children:
-                if isinstance(w, Container):
+                if isinstance(w, Container) or w.group == Groups.container:
                     self.root_obj = w
                     break
         self._uproot_widget(widget)

studio/parsers/loader.py

@@ -266,7 +266,7 @@ def generate(self):
         other widgets at the root level are ignored and cannot be recovered later
         :return:
         """
-        adapter = self.get_adapter(self.root.__class__)
+        adapter = self.get_adapter(self.designer.root_obj.__class__)
         self.root = adapter.generate(self.designer.root_obj, None)
         # load meta and variables first
         self._meta_to_tree(self.root)

studio/tools/canvas.py

@@ -754,7 +754,8 @@ def load(cls, node, designer, parent, bounds=None):
             cls._tool.initialize_canvas(widget)
         for sub_node in node:
             if sub_node.type not in CANVAS_ITEM_MAP:
-                raise NotImplementedError(f"Tag <{sub_node.type}> not implemented by canvas tool")
+                # ignore non canvas items
+                continue
             # use a copy just in case something gets popped down the line
             config = dict(sub_node.attrib.get("attr", {}))
             # add name to config as id so the intercepts can set it for us