As I said in my last post about the eclipse Tree Widget for Path Mapping I have built a snippet base on the snippet for building a tree with basic check functionality. You can have a look at the snippet and the screenshot. The snippet compiles and runs, even though there are Java errors in it! I have added a method called buildUpProjectStructureTree which would build up the project structure in the tree. In the snippet I only use a dummy tree to show the functionality of the tree editor within a single column to map a path. 
Screenshot of the running PathMappingSnippet
