/*
    * $Id: ApplicationContextJeeConfig.java 1306435 2012-03-28 15:39:11Z nlebas $
    *
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.tiles.request.velocity.render;
  
  import java.util.Collections;
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.servlet.ServletContext;
  
  import org.apache.tiles.request.ApplicationContext;
  import org.apache.tiles.request.servlet.ServletUtil;
  import org.apache.velocity.tools.view.JeeConfig;
  
  /**
   * Implements JeeConfig to use parameters set through
   * {@link VelocityRenderer#setParameter(String, String)}.
   *
   * @version $Rev: 1306435 $ $Date: 2012-03-29 02:39:11 +1100 (Thu, 29 Mar 2012) $
   */
  public class ApplicationContextJeeConfig implements JeeConfig {
  
      /**
       * The application context.
       */
      private ApplicationContext applicationContext;
  
      /**
       * The initialization parameters for VelocityView.
       */
      private Map<String, String> params;
  
      /**
       * Constructor.
       *
       * @param applicationContext The application context.
       * @param params Configuration parameters.
       */
      public ApplicationContextJeeConfig(ApplicationContext applicationContext, Map<String, String> params) {
          this.applicationContext = applicationContext;
          this.params = new HashMap<String, String>(params);
      }
  
      /** {@inheritDoc} */
      public String getInitParameter(String name) {
          return params.get(name);
      }
  
      /** {@inheritDoc} */
      public String findInitParameter(String key) {
          return params.get(key);
      }
  
      /** {@inheritDoc} */
      public Enumeration<String> getInitParameterNames() {
          return Collections.enumeration(params.keySet());
      }
  
      /** {@inheritDoc} */
      public String getName() {
          return "Application Context JEE Config";
      }
  
      /** {@inheritDoc} */
      public ServletContext getServletContext() {
          return ServletUtil.getServletContext(applicationContext);
      }
  }