public void onDisableZoneEditing(DisableZoneEditingEvent event) {
setEditingZonesEnabled("");
}
});
eventBus.addHandler(RenderZonesEvent.TYPE,
new RenderZonesEventHandler() {
public void onRenderZones(RenderZonesEvent event) {
final RenderZonesEvent e = event;
renderZones(e.vertexHash);
}
});