Imitating tail -f

[jsatchell]

I would like to have a component that tracks the content of an external log file, so the user can see progress during a long running external process. Polled updates would be fine, or I could use a reader thread and send lines down a channel to the UI thread as they become available. Is there an example that shows how to do something like this? I found the progressbar, but that is a special case set up for updates over a channel. Is there a simple pattern for adding content to view and flushing it to screen?