/*
    * $Id: JspAutotagRuntime.java 1360343 2012-07-11 18:35:52Z 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.jsp.autotag;
  
  import javax.servlet.jsp.JspContext;
  import javax.servlet.jsp.PageContext;
  import javax.servlet.jsp.tagext.SimpleTagSupport;
  import org.apache.tiles.autotag.core.runtime.ModelBody;
  import org.apache.tiles.autotag.core.runtime.AutotagRuntime;
  import org.apache.tiles.request.Request;
  import org.apache.tiles.request.jsp.JspRequest;
  
  /**
   * A Runtime for implementing JSP tag libraries.
   */
  public class JspAutotagRuntime extends SimpleTagSupport implements AutotagRuntime<Request> {
      /** {@inheritDoc} */
      @Override
      public void doTag() {
          // do nothing like the parent implementation, 
          // but don't throw exceptions either
      }
  
      /** {@inheritDoc} */
      @Override
      public Request createRequest() {
          JspContext pageContext = getJspContext();
          return JspRequest.createServletJspRequest(org.apache.tiles.request.jsp.JspUtil.getApplicationContext(pageContext),
                                                    (PageContext) pageContext);
      }
  
      /** {@inheritDoc} */
      @Override
      public ModelBody createModelBody() {
          return new JspModelBody(getJspBody(), getJspContext());
      }
  
      /** {@inheritDoc} */
      @Override
      public <T> T getParameter(String name, Class<T> type, T defaultValue) {
          throw new UnsupportedOperationException("the parameters are injected into the tag itself, no need to fetch them");
      }
  }