Singleton layout that positions its children

[jasongrout]

Currently the SingletonLayout provides a nice simplification of PanelLayout (i.e., a single CSS-positioned child). It would be great if we had a similar singleton layout that simplified BoxLayout (i.e., that explicitly positioned its single child, so size information propagated up and down through the layout).

For now, I'll use a Layout attribute which internally I know is a BoxLayout with one child.

[sccolbert]

Can you use a StackedLayout with one child?

[jasongrout]

Thanks. That's enough better than BoxLayout (e.g., I don't have to set stretch factors, etc.) that it works well for my usecase: jupyterlab/jupyterlab@4efcad2

[sccolbert]

Glad that worked for your case. I'm going to re-open this though. I think it would be nice to have an "absolute mode" or something for SingletonLayout.

[jasongrout]

Thanks, that's great too. That would convey more clearly my intent instead of using a stacked layout with one child.