/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.j2ee.core.internal.validation.xmlerrorcustomization;

import java.util.Iterator;

import org.eclipse.wst.xml.core.internal.validation.errorcustomization.ElementInformation;
import org.eclipse.wst.xml.core.internal.validation.errorcustomization.IErrorMessageCustomizer;

/**
 * A J2EE message customizer for the XML validator. This error customizer will
 * customize errors on application.xml.
 */
public class J2EEErrorMessageCustomizer implements IErrorMessageCustomizer {

	/* (non-Javadoc)
	 * @see org.eclipse.wst.xml.core.internal.validation.errorcustomization.IErrorMessageCustomizer#customizeMessage(org.eclipse.wst.xml.core.internal.validation.errorcustomization.ElementInformation, java.lang.String, java.lang.Object[])
	 */
	public String customizeMessage(ElementInformation elementInfo, String errorKey, Object[] arguments) {
		if ("cvc-complex-type.2.4.a".equals(errorKey) || "cvc-complex-type.2.4.b".equals(errorKey)) { //$NON-NLS-1$ //$NON-NLS-2$
			if ("application".equals(elementInfo.getLocalname())) { //$NON-NLS-1$
				boolean applicationHasModule = false;
				for (Iterator i = elementInfo.getChildren().iterator(); i.hasNext();) {
					ElementInformation child = (ElementInformation) i.next();
					if ("module".equals(child.getLocalname())) { //$NON-NLS-1$
						applicationHasModule = true;
						break;
					}
				}
				if (!applicationHasModule) {
					return J2EEXMLCustomValidationMessages.J2EE_APPLICATION_ONE_OR_MORE_MODULES;
				}
			}
			if ("ejb-jar".equals(elementInfo.getLocalname())) { //$NON-NLS-1$
				boolean ejbHasBeans = false;
				for (Iterator i = elementInfo.getChildren().iterator(); i.hasNext();) {
					ElementInformation child = (ElementInformation) i.next();
					if ("enterprise-beans".equals(child.getLocalname())) { //$NON-NLS-1$
						ejbHasBeans = true;
						break;
					}
				}
				if (!ejbHasBeans) {
					return J2EEXMLCustomValidationMessages.EJB_ONE_OR_MORE_BEANS;
				}
			}
		}
		return null;
	}
}