Window's notepad is blindingly light themed, so i decided to make my own dark theme version. It's fairly robust but it works

the items on the left are a separate control (NotepadItem or something), and their datacontext is a FileItemViewModel which contains a DocumentModel (containing path, filename, text, etc) and FormatModel (fontsize, wrapping, etc). When you select an item, it sets the main notepad view's datacontext as the item's datacontext you selected.

it's completely opensource so you can edit it and stuff. would be nice if you credited me if you post it somewhere else (or dont... not too bothered tbh) :)