They don't
have any persistence implemented. The project is focused on
editing the formula, so all they have at the moment is a Java object
holding the formula. With that, we can serialize it any way we want.
But not display it in any other format?
Sounds annoying.
Ah, I see now - you mean rendering formulas to PNG, SVG, etc. And there's no
problem at all with that. Rendering to images could be easily implemented - it's
a matter of several hours of work (or even several minutes). The only thing that
is needed is a GWT library for image rendering, or a Java library if you want to
render images on the server side.
There's a small "how to" guide on achieving that
(
http://code.google.com/p/gwt-equation-editor/wiki/GettingStarted).
Bulat.