/**
 * This file Copyright (c) 2010-2012 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the Magnolia
 * Network Agreement and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or MNA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Magnolia Network Agreement (MNA), this file
 * and the accompanying materials are made available under the
 * terms of the MNA which accompanies this distribution, and
 * is available at http://www.magnolia-cms.com/mna.html
 *
 * Any modifications to this file must keep this entire header
 * intact.
 *
 */
package info.magnolia.cms.util;

import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;

/**
 * Custom {@link javax.servlet.ServletConfig} for manually initializing servlets.
 */
public class CustomServletConfig implements ServletConfig {

    private final String servletName;
    private final ServletContext servletContext;
    private final Map<String, String> initParameters;

    public CustomServletConfig(String servletName, ServletContext servletContext, Map<String, String> initParameters) {
        if (initParameters == null) {
            throw new IllegalArgumentException("initParameters can't be null. Something must be wrong.");
        }
        this.servletName = servletName;
        this.servletContext = servletContext;
        this.initParameters = initParameters;
    }

    /**
     * @deprecated not used
     */
    public CustomServletConfig(String servletName, ServletContext servletContext) {
        this(servletName, servletContext, new HashMap<String, String>());
    }

    @Override
    public String getServletName() {
        return servletName;
    }

    @Override
    public ServletContext getServletContext() {
        return servletContext;
    }

    @Override
    public String getInitParameter(String name) {
        return this.initParameters.get(name);
    }

    @Override
    public Enumeration getInitParameterNames() {
        return Collections.enumeration(initParameters.keySet());
    }
}