Ability to customize context menu for a mod

I'm currently using popouts in multiple mods to let users change the settings of those mods (e.g. the shapes of nodes in a network graph mod, or enabling / disabling UI controls in a 'filter panel' mod).

To display those popouts I'm currently using those options :

• either using a button which the user has to click, but this takes some "landscape",

• or using mouse events like a double click or a "long click", but those are not really intuitive.

The most intuitive way to access those settings would be a "right-click", but listening to a right click for displaying those popouts would conflict with the built-in context menu.

Instead, it would be nice to have the ability to customize this context menu with new items specific to the mod the user right-clicks on.

Thanks!