<extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            id="edu.rwth.hci.codegestalt.NewActionSet"
            label="Code Gestalt Diagram Creation"
            visible="false">
         <action
               class="edu.rwth.hci.codegestalt.wizard.RunCgtWizardAction"
               icon="icons/CgtNew16.png"
               id="edu.rwth.hci.codegestalt.CgtNewAction"
               label="New Code Gestalt Diagram"
               style="push"
               toolbarPath="Normal/JavaWizards"
               tooltip="New Code Gestalt Diagram">
         </action>
      </actionSet>
   </extension>

public class RunCgtWizardAction extends Action implements
        IWorkbenchWindowActionDelegate {
    
    IWorkbenchWindow window;

    @Override
    public void dispose() {
        // noop
    }

    @Override
    public void init(IWorkbenchWindow window) {
        this.window = window;
    }

    @Override
    public void run(IAction action) {
        CgtWizard wizard = new CgtWizard();
        wizard.init(window.getWorkbench(), null);
        Shell shell = window.getShell();
        WizardDialog dialog = new WizardDialog(shell, wizard);
        dialog.create();
        dialog.open();
    }

    @Override
    public void selectionChanged(IAction action, ISelection selection) {
        // noop
    }
}