code: public void onClick(ClickEvent clickEvent) {
  		List<Feature> features = new ArrayList<Feature>();
   		for (VectorLayer layer : mapWidget.getMapModel().getVectorLayers()) {
  			features.addAll(layer.getSelectedFeatureValues());
  		}
  		// only zoom when there where really some items selected
  		if (features.size() > 0) {
  			mapWidget.getMapModel().panToFeatures(features);
  		}
  	}
docs: Pan to the selected features.