Image icon = defaultImg;
ImageDescriptor iconDescriptor = null;
Object data = cell.getElement();
if (data instanceof ConfigurationElementCategory) {
ConfigurationElementCategory category = (ConfigurationElementCategory) data;
cell.setText(category.toString());
iconDescriptor = AbstractUIPlugin.imageDescriptorFromPlugin(Plugin.PLUGIN_ID, "icons/fldr_obj.gif");
} else if (data instanceof IConfigurationElement) {
IConfigurationElement element = (IConfigurationElement) data;
cell.setText(element.getAttribute("name"));