Navigation Block: develop a content-only representation

[mtias]

There should be a way to make edits to your menu while on content-only mode. The canvas edits should be restricted but the inspector menu should be reachable.

We should explore exposing the "menu list view" in the inspector of template parts or patterns that contain a menu when the user is on content-only mode.

There should be a clear way to reach that panel from the toolbar of the nav block and the template/pattern. Could be an "edit menu" that just toggles the inspector with the tab for the menu open.

[youknowriad]

How do you see this kind of feature being "declared" for block types. In other words, until now, block types were not aware about whether they are in "content only" mode or not. We only detected blocks that have a "content" role attribute and allowed some specific behavior there. How do you see that evolving, should block types receive some kind of isSection flag and enable/disable behavior.

[mtias]

I don't think we should abstract this too soon. The navigation block already has a special tab in the inspector, so perhaps it's part of formalizing that view down the road. Conceptually, I don't think blocks should be made aware of "modes".