This is part 3 of my Google Wave developer sandbox review. Part 1 and part 2 were both an introduction to some wave concepts. In this part we’ll be taking a look at the Google Wave Gadget API by writing a simple rating gadget. If you don’t know what gadgets are or what they do, please read my previous post here.

The gadget

The gadget I have written is supposed to be used when you want wave participants to rate something inside your wave (or the wave itself). You simply add the gadget to your wave, set the title and you’re good to go. I also wanted the gadget to have a settings menu that was only visible by the person who added the gadget to the wave.