Populating / Caching the available attributes so they can be used in disconnected items

[draconas1]

Currently there is a problem in that because the item-use attribute selector is a drop down box, the value must come from the box. The possible values for the box are calculated off the owning actor.

This means that items that are created separately can't have one selected, and items that are dragged from an actor to a free-floating item lose theirs as soon as they are opened. (We do I believe sidestep this with the example compendium ones, because they are read only, and the "loss" only happens when the item is opened in an updatable UI that updates based on the value in the dropdown. We dragged the potions directly from character -> compendium. so provided you drag them back compendium -> character they work, but go compendium -> item -> character they will loose their attribute if you open them as an item)

Trying to consider a way this can be unlinked from a specific actor and a generic list of actor attributes can be populated at system startup time (so we don't have to remember to update it when modifying the system) and then that is fed to the dropdown instead.

I am ruminating on this problem, as initially there are no actors in the system to use, so I need to think of a way to get all the relevant attributes of the actor without actually having an actor. I will look at the code on how the system is doing this in the first place at some stage, but for now am putting down thought experiment comments on possible solution.

[draconas1]

Storyguide on discord has this useful snippet that may get us where we want: Object.keys(foundry.utils.flattenObject(game.system.model.Item))