Strategy for Design-time Data in FlexBuilder

I use data binding all over the place... but when I look at my app in the design view, the data bindings are either empty or show the binding expression. In either case, it doesn't let me preview what my view will look like.

I have come up with one strategy: Create a "Design" state and populate the values with开发者_如何学C text.Design="fake data" or whatnot... but that becomes messy... I have to switch back and forth between visual states to get it all right.

There must be a better strategy?