EDIT

/**

 * <p>TaxonNodePropertyTester class.</p>

 *

 * @author n.hoffmann

 * @version $Id: $

 */

package eu.etaxonomy.taxeditor.navigation.navigator;

import org.eclipse.core.expressions.PropertyTester;

import eu.etaxonomy.cdm.model.taxon.Taxon;

import eu.etaxonomy.cdm.model.taxon.TaxonNode;

import eu.etaxonomy.cdm.model.taxon.TaxonomicTree;

public class TaxonNodePropertyTester extends PropertyTester {

	private static final Object HAS_SYNONYMS = "hasSynonyms";

	private static final Object HAS_TAXA = "hasTaxa";

	/** {@inheritDoc} */

	public boolean test(Object receiver, String property, Object[] args,

			Object expectedValue) {

		if (receiver instanceof TaxonNode && HAS_SYNONYMS.equals(property)) {

			Taxon taxon = ((TaxonNode) receiver).getTaxon();

			if(taxon != null){

				return taxon.hasSynonyms();

			}

		}

		if (receiver instanceof TaxonomicTree && HAS_TAXA.equals(property)) {

			TaxonomicTree taxononomicTree = (TaxonomicTree) receiver;

			return taxononomicTree.getChildNodes().size() > 0;

		}

		return false;

	}

}