Hello I have an application, it’s very basic but has some fields for an address, so city, zip code, state etc…

I want it so the user can undo the content across multiple fields, currently the default undo only works on the field you are using. I am using NSTextFields for my fields.

I assume I need to use UndoManager but I am not sure how to implement it on my fields, my fields have ID’s. Is there any documentation on how to do this, none of the fields have any functions – I just grab the data from all of the fields on one of my button events.

I don’t know swift so please responsd in Obj-c so I can undertstand what needs to be done.