public class MyEditor extends DiagramEditor{
	

	@Override
	protected DiagramBehavior createDiagramBehavior() {
		return new GuideDiagramBehavior(this);
	}

        @Override
	public void selectionChanged(IWorkbenchPart part, ISelection selection) {
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection sel = (IStructuredSelection) selection;
			if (!sel.isEmpty() 
					&& sel.getFirstElement() instanceof GraphitiShapeEditPart) {
				GraphitiShapeEditPart ep = (GraphitiShapeEditPart) sel.getFirstElement();
				if (ep.getPictogramElement() instanceof PictogramElement) {
					PictogramElement pe = ep.getPictogramElement();
					XmleditorToolBehaviorProvider.setPictogramElement(pe);
					getDiagramBehavior().refreshPalette();
					
				}
			}
		}

	}
}