/*
    * JaspertReports JSF Plugin Copyright (C) 2011 A. Alonso Dominguez
    *
    * This library is free software; you can redistribute it and/or modify it
    * under the terms of the GNU Lesser General Public License as published by
    * the Free Software Foundation; either version 2.1 of the License, or (at
    * your option) any later version. This library is distributed in the hope
    * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
    * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   *
   * See the GNU Lesser General Public License for more details. You should have
   * received a copy of the GNU Lesser General Public License along with this
   * library; if not, write to the Free Software Foundation, Inc., 59 Temple
   * Place, Suite 330, Boston, MA 02111-1307 USA A.
   *
   * Alonso Dominguez
   * alonsoft@users.sf.net
   */
  
  package net.sf.jasperreports.jsf.context;
  
  import java.util.Collections;
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.faces.render.ResponseStateManager;
  import javax.portlet.ResourceRequest;
  import javax.portlet.faces.Bridge;
  import javax.portlet.filter.ResourceRequestWrapper;
  
  import net.sf.jasperreports.jsf.Constants;
  
  /**
   *
   * @author A. Alonso Dominguez
   */
  final class ReportPortletRenderRequest extends ResourceRequestWrapper
          implements ReportRenderRequest {
  
      private final String oldViewId;
      private final String viewState;
  
      public ReportPortletRenderRequest(ResourceRequest request,
      		String facesMapping, String viewId, String viewState) {
          super(request);
          
          this.oldViewId = (String) request.getAttribute(Bridge.VIEW_ID);
          request.setAttribute(Bridge.VIEW_ID, viewId);
          this.viewState = viewState;
      }
  
      @Override
      public String getParameter(String name) {
          String[] values = getParameterValues(name);
          if (values == null || values.length == 0) {
              return null;
          } else {
              return values[0];
          }
      }
  
      @Override
      public Map<String, String[]> getParameterMap() {
          Map<String, String[]> paramMap = new HashMap<String, String[]>();
          paramMap.putAll(super.getParameterMap());
          paramMap.put(ResponseStateManager.VIEW_STATE_PARAM,
                  new String[]{viewState});
          return Collections.unmodifiableMap(paramMap);
      }
  
      @Override
      public Enumeration<String> getParameterNames() {
          return Collections.enumeration(getParameterMap().keySet());
      }
  
      @Override
      public String[] getParameterValues(String name) {
          return getParameterMap().get(name);
      }
  
      public String getReportClientId() {
          return getRequest().getParameter(Constants.PARAM_CLIENTID);
      }
  
      public String getViewId() {
          return (String) getRequest().getAttribute(Bridge.VIEW_ID);
      }
  
      public void release() {
          getRequest().setAttribute(Bridge.VIEW_ID, oldViewId);
      }
  
  }