The sources of the current designer are in 'org.jbpm.gd.jpdl'. Check out this module as a project in Eclipse. The plugin.xml you want to study is in that project.
If you are starting Eclipse development, you should start by reading the docs and building a little plugin of your own. Building on top of the GPD is a daunting task for a newbie. But I encourage you to keep going, we are definitely in need for collaboration on the GPD.
Thank you very much. This works.
I hope I can manage to work into the Designer a bit fast. I need some way to build an editor for jPDL as Eclipse plugin that can interactively transform between different jPDL Files. I think the designer needs only some extensions to achieve this goal, so I am going to try this approach.
I've just gotten the GPD source and am having some issues. It builds fine but I dont see any of the context menus (like 'add action' when the user right clicks on a transition). I looked at the plugin.xml and the popupMenus and propertyPages extension point is commented out. If i 'un-comment' these extension points I do see the context menus and the property pages but I get an error when they open up :
Plug-in org.jbpm.gd.jpdl.ui was unable to load class org.jbpm.gd.jpdl.ui.properties.JpdlElementGeneralPropertyPage.
Can anyone tell me what I am doing wrong.
Might be related to the fact that it is alpha code and under development.
I was actually just looking for a way to add events and actions which I knew was supported. Just found the tabbed propertys view.