Log plotter: show progress of archive fetch

As a cryogenics technician, I am interested in plotting data in the ibex client over a long time period (e.g. weeks). The plotting works fine, but there is a delay as the client pulls the relevant data from the instrument over the network. I would like visual feedback about the progress of this task (or even just an indicator that something is running).

I think this should be possible as I believe CSS uses the eclipse jobs API, we should be able to hook into that API and display jobs in progress.