onDocumentChange fullPath()

jschelling

I'm trying to use fullPath() from onDocumentChange handler to determine the Artboard where a change occurred. What data type does fullPath() return and how is this intended to be used? By using typeof it seems to be an object, but it doesn't look to have any properties... so I'm treating it as a string and then doing a lot of changes.split() to get what I need. This definitely works... it's just not very elegant. Am I missing something ? Thanks!

hannes

Not an expert but it looks like fullPath() returns an NSString. So, you're not doing something wrong I'd say.

In my code I can find an atrocity like

let parent = eval(`document.${change.fullPath().toString().match(/(.*)\./)[1]}`)

🤷‍♂️

jschelling

Thanks hannes - this helped a lot. I was taking a similar approach to the one @mathieudutour showed but was running into problems. While eval is not ideal, it works and I know onDocumentChange is an early feature and the API is likely to mature & change.

mathieudutour

I don't think you need to eval:

let parent = document[String(change.fullPath()).split('.')[1]]

hannes

mathieudutour

Thanks Mathieu 🙂 Unfortunately that doesn't work to get the parent layer of a removed element, which is what I'm doing with that eval-line. You would get document['pages[0].layers[0].layers[1]'].

If there is a eval-less way to get the parent layer of a removed layer in onDocumentChanged I'd be very interested to know.

hannes

For a little bit of recreational programming, I came up with an eval-free method to find out the parent of a removed layer from the change-object in onDocumentChanged:

let parent = change.fullPath().split('.').slice(0, -1).reduce(
  (acc, cur) => acc[cur.match(/\w*/)[0]][cur.match(/\d+/)[0]], document)

Not sure if better