/*
 * Copyright (c) 2007, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.ts.tests.jsp.common.util;

import jakarta.el.CompositeELResolver;
import jakarta.servlet.ServletContext;
import jakarta.servlet.ServletContextEvent;
import jakarta.servlet.ServletContextListener;
import jakarta.servlet.jsp.JspApplicationContext;
import jakarta.servlet.jsp.JspFactory;

/**
 * ServletContextListener that installs a CompositeELResolver.
 */
public class InstallCompositeELResolverListener
    implements ServletContextListener {
  public static CompositeELResolver compResolver;

  public void contextInitialized(ServletContextEvent evt) {

    compResolver = new CompositeELResolver();
    ServletContext context = evt.getServletContext();
    JspApplicationContext jspContext = JspFactory.getDefaultFactory()
        .getJspApplicationContext(context);
    jspContext.addELResolver(compResolver);

  }

  public void contextDestroyed(ServletContextEvent evt) {
  }

  public static CompositeELResolver getCompositeELResolver() {
    return compResolver;
  }
}
