I have a UI, let's call it ParentUI, which includes ChildUI - another ComposableModel. In the default layout, ChildUI includes a toolbar. When embedded in the ParentUI, I want the toolbars to be merged. It is easy to include the ChildUI tools in the ParentUI bar by adding ParentUI>>childTools, which I can then #add: to the layout. But the ChildUI tools also still show up in ChildUI (so they appear twice). I ended up defining ChildUI>>#noToolbarSpec, which I can pass to the layout like "add: #(#currentScenario. #noToolbarSpec)", and which delegates to ChildUI class>>#noToolbarSpec. I want to have the default ChildUI spec simply extend noToolbarSpec, but I didn't look into that yet. Anyway my question is: is this the best way to do what I'm trying to do? Thanks! ----- Cheers, Sean -- View this message in context: http://forum.world.st/Spec-custom-layouts-for-sub-models-tp4690508.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.