Hi Paul and Sunil,
Extending the designer is not really easy at the moment. There are a couple of
extension points that allow you to do these kinds of things, but they are not
documented and will probably change in the future. Have a look at the
plugin.xml file of the org.jbpm.gd.jpdl.ui project.
You will find the 'editPolicies' and 'graphElements' extension points. You can
see how they are used in the following excerpts:
<graphElement
| name="state"
| contributor="org.jbpm.ui.contributor.StateContributor">
| <entry
| category="org.jbpm.palette.1.BasicNodeTools"
| id="org.jbpm.ui.palette.2.State"
| label="State"
| tooltip="Creates a State node"
| type="node"/>
| </graphElement>
|
<editPolicy
| id="org.jbpm.ui.NodeComponentEditPolicy"
| part="org.jbpm.ui.part.graph.NodeGraphicalEditPart"
| policy="org.jbpm.ui.policy.NodeComponentEditPolicy"
| role="ComponentEditPolicy"/>
|
Certainly the use of the 'editPolicy' extension point (which serves to modify
and customize the way graphical objects react to user input) requires a fair
amount of GEF knowledge.
Hopefully this helps.
Regards,
Koen
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