I’ve been writing a bit about Google Web Toolkit lately. It undeniably is disrupting traditional browser-based RIA development. But it does lack some features out of the box that most developers have grown accustomed to from frameworks like Flex and Ext. Field validation is one such feature. While the gwt-validation project exists to solve this very problem, an approach leveraging a good chunk of the existing GWT infrastructure can give you a robust, test-driven, and MVP-friendly approach for validation. (more…)