My issue is this. I had originally intended to put the lower
control (with the letters) in a DataGrid item, for ease of data
binding. However, I can not seem to figure out how to get the long
strings to scroll in the grid. I can use an item renderer and get
each one to scroll individually, but I need them all to scroll in
unison. So I'm willing to extend a control in order to give it a
dataProvider property, I'm just not sure which control I should
look to extend.