WebExtension - how to open webtools from a context menu item

Hi,

I started to make an extension to replace the old AngScope (that was for Firebug) and inspired on ng-inspect (that make the same but with some limitations) : code / install

This extension adds an item to the context menu to inspect the Angular JS scope of the pointed element.

In the original AngScope extension on a click in the menu item, the Firebug panel was automaticaly opened (and put on the foreground when used as a standalone window). I didn’t find in the documentation nor in this forum any way to do that with the native devtools… Is there a solution?