Is there a plugin for this? Tiled preview

[Marscaleb]

So I was watching this video https://www.youtube.com/watch?v=3kPpfLmelIs And right at the very beginning you can see he sets up a little preview window that shows what his given selection would look like if it were tiled.  I thought this was amazing because it gives him a real-time preview of the changes he makes to his design, where as I have had to make various changes, and then use filters -> Maps -> Tile to generate a preview image of what my selection looks like when it tiles.  It's effective, but it is a bit time consuming, and I would love to be able to see those changes real-time without having to run special commands; especially at the very early stages of creating a tile.

Is there any plug-in or way to create such an effect in GIMP?  I'd like to keep all my work in GIMP if I could, rather than having to get this iDraw just for one single feature.