add massages of export/import is not supported inside node groups. Su…

…pporting can be added easily but group input/output nodes should be excluded from exported nodes because in other way they can get into a normal tree during an import. Also for preset panel node group tree should get extra properties. Probably I did not switched off in all possible places (context menus?)

ui/presets.py

@@ -884,6 +884,9 @@ def poll(cls, context):
 
     def draw(self, context):
         layout = self.layout
+        if len(context.space_data.path) > 1:
+            layout.label(text="Is not supported inside node groups")
+            return
         ntree = context.space_data.node_tree
         panel_props = ntree.preset_panel_properties
 

ui/sv_IO_panel.py

@@ -126,6 +126,10 @@ def poll(cls, context):
         return bool(context.space_data.node_tree)
 
     def execute(self, context):
+        if len(context.space_data.path) > 1:
+            self.report({"WARNING"}, "Export is not supported inside node groups")
+            return {'CANCELLED'}
+
         ng = bpy.data.node_groups[self.id_tree]
 
         destination_path = self.filepath
@@ -206,6 +210,10 @@ class SvNodeTreeImporter(bpy.types.Operator):
     new_nodetree_name: bpy.props.StringProperty()
 
     def execute(self, context):
+        if len(context.space_data.path) > 1:
+            self.report({"WARNING"}, "Import is not supported inside node groups")
+            return {'CANCELLED'}
+
         ng = context.scene.io_panel_properties.import_tree
         if not ng:
             self.report(type={'WARNING'}, message="The tree was not chosen, have a look at property (N) panel")
@@ -244,6 +252,10 @@ class SvNodeTreeImportFromGist(bpy.types.Operator):
     gist_id: bpy.props.StringProperty()
 
     def execute(self, context):
+        if len(context.space_data.path) > 1:
+            self.report({"WARNING"}, "Import is not supported inside node groups")
+            return {'CANCELLED'}
+
         if not self.id_tree:
             ng_name = self.new_nodetree_name
             ng_params = {
@@ -278,6 +290,10 @@ def poll(cls, context):
         return bool(context.space_data.node_tree)
 
     def execute(self, context):
+        if len(context.space_data.path) > 1:
+            self.report({"WARNING"}, "Export is not supported inside node groups")
+            return {'CANCELLED'}
+
         ng = context.space_data.node_tree
 
         is_tree_exportable, msg = self.can_be_exported(ng)