Grid: Customize Sidebar Button with column hiding toggles ?

I am using a grid with many columns which the user will hide/unhide depending on the task they are doing. They want all the columnsin the grid in case they need them for some reason. The sidebar button works wonderfully but is there anyway to customize this so that a "Select All" and "Deselect All" can be added so they don't have to individually click each column ?

This seems not to be trivial since the implementation is in the Grid clientside and it is private. So you cannot solve this via extension for example.
 

Wherecan I make an enhancement request ?

Hi,

you can submit tickets at https://github.com/vaadin/framework

-Olli