This has been on my list of things to do in Flex since it was released. I finally got around to knocking together this units converter (the first three tabs are the only ones that work at the moment). During the development I think I finally grasped (well, got a better grasp anyway Events in Flex 2. The way that classes communicate also became a little clearer to me during the building of this. The lists in each section are actionscript components that call a Singleton class to do the actual calculation.
Check it out here (right click the movie to view the source – which I originally forgot to enable in the movie!)
I'm interested in feedback from flexers as to how they'd go about creating an interface to something like this. I think tabs is a reasonable way to split up the different unit groups, but want to hear of some other ideas of how the components could be used to create a better UI.
Here's a link to my original take on unit conversion in Flash. I made this in 2002 using Flash 5! How things have changed…