Command and Incremental Command

If you want to execute a set of statements in the nearest future when the browser event loop is false. And to avoid the browser warning for prolonged JavaScript execution. We need to put code inside the execute method of Command interface or IncrementalCommand interface for repeat calling on execute method until code executed completely b/w browser event loop is false.

GSS is GWT’s CSS Pre Processor from 2.7

GWT up coming version 2.7 has the beta implementation of GSS (Google Stylesheet) which will be replacement of CSSResource bundle. GSS supports Mixin, Variable, Conditional directive, function, etc. This enable GWT project to maintain the CSS rules very effectively and efficiently. In Arcbees foundation already started using GSS in latest GWT projects. For more informantion, please look into GSS github project.