[gef-dev] is it an elegance solution?

[道平 张 <chauntowpin@xxxxxxxxxxxx>]

My object is to add a dialog triggered by a double
click on a figure. the flowing is my code.it works well,
but I wonder it is a good solution.
        In the figure's editpart, add an  method-- performRequest inherited
 from the AbstractEditPart.

public void performRequest(Request req) {
     if(req.getType().equals(REQ_OPEN))
     MessageDialog.openInformation(
       ((DefaultEditDomain)getViewer().getEditDomain()).getEditorPart().getSite().getShell(),"Readme Editor","View Action executed");
  }

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