Open a dialog when double clicking on an edit part

<back

• Follow the instructions you find ​here.
• Write a command class similar to this:

  public class OpenDialogCommand extends Command {
  
  		@Override
  		public void execute() {
  
  			TwoListsSelectionDialog dialog = new TwoListsSelectionDialog(
  					PlatformUI.getWorkbench().getActiveWorkbenchWindow()
  							.getShell());
  			EObject exhibitionModule = ((ExhibitionModuleEditPart) getParent())
  					.resolveSemanticElement();
  
  			dialog.setList(((ExhibitionModule) exhibitionModule).getSlides());
  			Object[] results = null;
  			dialog.open();
  			results = dialog.getResult();
  
  			Sequence seq = (Sequence) resolveSemanticElement();
  			if (results == null) {
  				seq.eSet(ExhibitionPackage.eINSTANCE.getSequence_SlideOrder(),
  						null);
  				return;
  			}
  
  			String slideOrder = "";
  
  			for (Object obj : results) {
  				if (obj instanceof Slide) {
  					slideOrder += ((Slide) obj).getSlideId() + ";";
  				}
  			}
  			org.eclipse.emf.common.command.Command cmd = SetCommand.create(
  					getEditingDomain(), seq, ExhibitionPackage.eINSTANCE
  							.getSequence_SlideOrder(), slideOrder);
  			getEditingDomain().getCommandStack().execute(cmd);
  			System.out.println(getClass().getName() + " seq "
  					+ seq.getSlideOrder());
  		}
  
  	}