How to achieve the screen using Graphical Editing Framework in eclipse

I want to achieve the GUI represents in the link provided http://www.eclipse.org/gef/. I wa开发者_StackOverflow中文版nt that kind of view as drag and drop. Is there any resource available to get that kind of screen. I tried the snippets available for Zest already. But my objective is to get the drag and drop of buttons to the editor window as a GUI Builder.

Check UML project for Eclipse, probably you need something like that... link