TreeSelection selection = (TreeSelection) viewer.getSelection();
DiagramRegion region = (DiagramRegion) selection.getFirstElement();
ZoomToRegionHandler.zoomTo(viewer.getControl(), getDisplay(), region.getResource());
TreeSelection selection = (TreeSelection) viewer.getSelection();
DiagramRegion region = (DiagramRegion) selection.getFirstElement();
ZoomToRegionHandler.zoomTo(viewer.getControl(), getDisplay(), region.getResource());