// collect entity and tool tip information...
if (state.getInfo() != null) {
EntityCollection entities = state.getEntityCollection();
if (entities != null) {
String tip = null;
XYToolTipGenerator generator = getToolTipGenerator(series,
item);
if (generator != null) {
tip = generator.generateToolTip(dataset, series, item);
}
String url = null;
if (getURLGenerator() != null) {
url = getURLGenerator().generateURL(dataset, series, item);
}