What message is Collabora sending on autosave?

[silverkszlo]

I'm unsure if this [UI_Save] only catches the manual save through the menu bar button. For autosave this could be interesting as well, but from the post message documentation i do not see any hint that there is such a message.

There is Action_Save_Resp but I'm unsure if that will get triggered. Nothing blocking, but something to check and file with collabora as possible follow up I'd say._
Originally posted by @juliusknorr in #5293 (comment)

→ So, question to clarify: Does autosave trigger UI_Save or any other message?

[juliusknorr]

Sorry I mentioned earlier that I wrote this, but seems I've left the tab open without sending my response:

Looking at the console I noticed there is a Doc_ModifiedStatus message that switches between true and false. We could track that and consider a transition from true to false a save where we act then.

https://sdk.collaboraonline.com/docs/postmessage_api.html

Doc_ModifiedStatus
Notification to update the modified status of the document. Values.Modified will be true, if the document has been modified since the last save, otherwise, it will be false if the document has been saved.
Note that this notification may be published without a change from the prior value, so care must be taken to check the Values.Modified value and not assume the notification itself implies the modified state of the document on its own.