/*
 * grEMF
 *
 * Copyright (C) 2006-2012 Institute for Software Technology
 *                         University of Koblenz-Landau, Germany
 *                         ist@uni-koblenz.de
 *
 * For bug reports, documentation and further information, visit
 *
 *                         https://github.com/jgralab/gremf
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses>.
 *
 * Additional permission under GNU GPL version 3 section 7
 *
 * If you modify this Program, or any covered work, by linking or combining
 * it with Eclipse (or a modified version of that program or an Eclipse
 * plugin), containing parts covered by the terms of the Eclipse Public
 * License (EPL), the licensors of this Program grant you additional
 * permission to convey the resulting work.  Corresponding Source for a
 * non-source form of such a combination shall include the source code for
 * the parts of JGraLab used as well as that of the covered work.
 */
package de.uni_koblenz.gremf.util;

import java.util.Iterator;

import org.eclipse.emf.common.util.AbstractTreeIterator;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;

public class EObjectUtil {

	public static TreeIterator<EObject> eAllContents(EObject e) {
		return new AbstractTreeIterator<EObject>(e, false) {
			private static final long serialVersionUID = 1L;

			@Override
			public Iterator<EObject> getChildren(Object object) {
				return ((EObject) object).eContents().iterator();
			}
		};
	}

	public static int getFeatureID(EObject eObj, EStructuralFeature feature) {
		int index = eObj.eClass().getEAllStructuralFeatures().indexOf(feature);
		if (index >= 0) {
			return eObj.eClass().getEAllStructuralFeatures().get(index)
					.getFeatureID();
		} else {
			return index;
		}

		// for (EStructuralFeature sf :
		// eObj.eClass().getEAllStructuralFeatures()) {
		// if (sf.equals(feature)) {
		// return sf.getFeatureID();
		// }
		// }
		// return -1;
	}

	public static boolean isCorrectFeature(EObject eObj,
			EStructuralFeature feature) {
		return eObj.eClass().getEAllStructuralFeatures().contains(feature);

		// for (EStructuralFeature sf :
		// eObj.eClass().getEAllStructuralFeatures()) {
		// if (sf.equals(feature)) {
		// return true;
		// }
		// }
		// return false;
	}
}