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/**
 *  Copyright (c) 2011 Atos.
 *
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  which accompanies this distribution, and is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  Contributors:
 *  Atos - Initial API and implementation
 *
 */
package org.eclipse.papyrus.infra.nattable.modelexplorer.queries;

import java.util.Iterator;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager;
import org.eclipse.papyrus.emf.facet.efacet.core.exception.DerivedTypedElementException;
import org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2;
import org.eclipse.papyrus.emf.facet.query.java.core.IParameterValueList2;
import org.eclipse.papyrus.infra.nattable.model.nattable.Table;
import org.eclipse.papyrus.views.modelexplorer.NavigatorUtils;
import org.eclipse.papyrus.views.modelexplorer.queries.AbstractEditorContainerQuery;

public class IsTableContainer extends AbstractEditorContainerQuery implements IJavaQuery2<EObject, Boolean> {

	/**
	 * Return true if the element is a Table Container
	 */
	@Override
	public Boolean evaluate(EObject source, IParameterValueList2 parameterValues, IFacetManager facetManager) throws DerivedTypedElementException {
		Iterator<EObject> roots = NavigatorUtils.getNotationRoots(source);
		if (roots == null) {
			return false;
		}

		while (roots.hasNext()) {
			EObject root = roots.next();
			if (root instanceof Table) {
				Table table = (Table) root;
				EObject parent = table.getOwner() == null ? table.getContext() : table.getOwner();
				if (parent == source) {
					return true;
				}
			}
		}
		return false;
	}
}