/*
    * 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.jetspeed.portlet;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.portlet.ActionRequest;
  import javax.portlet.ActionResponse;
  import javax.portlet.PortletConfig;
  import javax.portlet.PortletException;
  import javax.portlet.PortletPreferences;
  import javax.portlet.RenderRequest;
  import javax.portlet.RenderResponse;
  import javax.portlet.WindowState;
  
  import org.apache.portals.bridges.velocity.GenericVelocityPortlet;
  
  /***
   * IFrameGenericPortlet
   * 
   * @author <a href="mailto:taylor@apache.org">David Sean Taylor </a>
   * @version $Id: IFrameGenericPortlet.java 578925 2007-09-24 19:22:58Z smilek $
   */
  public class IFrameGenericPortlet extends GenericVelocityPortlet
  {
  
      private Map attributes = new HashMap();
  
      private Map maxAttributes = new HashMap();
  
      public void init(PortletConfig config) throws PortletException
      {
          super.init(config);
          attributes.put("SRC", "http://www.apache.org");
          attributes.put("ALIGN", "BOTTOM");
          attributes.put("CLASS", "");
          attributes.put("FRAMEBORDER", "0");
          attributes.put("ID", "");
          attributes.put("MARGINHEIGHT", "0");
          attributes.put("MARGINWIDTH", "0");
          attributes.put("NAME", "");
  
          attributes.put("HEIGHT", "");
          attributes.put("WIDTH", "100%");
          attributes.put("SCROLLING", "NO");
          attributes.put("STYLE", "");
  
          maxAttributes.put("HEIGHT", "800");
          maxAttributes.put("WIDTH", "100%");
          maxAttributes.put("SCROLLING", "AUTO");
          maxAttributes.put("STYLE", "");
      }
  
      private String getAttributePreference(PortletPreferences prefs, String attribute)
      {
          return this.getMappedAttributePreference(prefs, attribute, attributes);
      }
  
      private String getMaxAttributePreference(PortletPreferences prefs, String attribute)
      {
          return this.getMappedAttributePreference(prefs, "MAX-" + attribute, maxAttributes);
      }
  
      private String getMappedAttributePreference(PortletPreferences prefs, String attribute, Map map)
      {
          return prefs.getValue(attribute, (String) map.get(attribute));
      }
  
      private void appendAttribute(PortletPreferences prefs, StringBuffer content, String attribute, Map map)
      {
          String value;
  
          if (map == maxAttributes)
              value = getMaxAttributePreference(prefs, attribute);
          else
              value = getAttributePreference(prefs, attribute);
  
          if (value == null || value.length() == 0) { return; }
          content.append(" ").append(attribute).append("=\"").append(value).append("\"");
      }
  
      private void appendAttribute(PortletPreferences prefs, StringBuffer content, String attribute)
      {
         appendAttribute(prefs, content, attribute, attributes);
     }
 
     private void appendMaxAttribute(PortletPreferences prefs, StringBuffer content, String attribute)
     {
         appendAttribute(prefs, content, attribute, maxAttributes);
     }
 
     public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException
     {
         String viewPage = (String)request.getAttribute(PARAM_VIEW_PAGE);
         if (viewPage != null)
         {
             super.doView(request, response);
         }
         else
         {
             doIFrame(request, response);
         }
     }
 
     public void doEdit(RenderRequest request, RenderResponse response) throws PortletException, IOException
     {
         response.setContentType("text/html");
         doPreferencesEdit(request, response);
     }
 
     /***
      * Render IFRAME content
      */
     protected void doIFrame(RenderRequest request, RenderResponse response) throws IOException
     {
         PortletPreferences prefs = request.getPreferences();
         String source = getURLSource(request, response, prefs);
         // generate HTML IFRAME content
         StringBuffer content = new StringBuffer(4096);
 
         // fix JS2-349
         content.append("<TABLE CLASS='iframePortletTableContainer' WIDTH='100%'><TBODY CLASS='iframePortletTbodyContainer'><TR><TD>");
 
         content.append("<IFRAME");
 
         // special case source
         content.append(" ").append("SRC").append("=\"").append(source).append("\"");
 
         appendAttribute(prefs, content, "ALIGN");
         appendAttribute(prefs, content, "CLASS");
         appendAttribute(prefs, content, "FRAMEBORDER");
         appendAttribute(prefs, content, "ID");
         appendAttribute(prefs, content, "MARGINHEIGHT");
         appendAttribute(prefs, content, "MARGINWIDTH");
         appendAttribute(prefs, content, "NAME");
         if (request.getWindowState().equals(WindowState.MAXIMIZED))
         {
             appendMaxAttribute(prefs, content, "HEIGHT");
             appendMaxAttribute(prefs, content, "WIDTH");
             appendMaxAttribute(prefs, content, "SCROLLING");
             appendMaxAttribute(prefs, content, "STYLE");
         }
         else
         {
             appendAttribute(prefs, content, "HEIGHT");
             appendAttribute(prefs, content, "WIDTH");
             appendAttribute(prefs, content, "SCROLLING");
             appendAttribute(prefs, content, "STYLE");
         }
         content.append(">");
         content.append("<P STYLE=\"textAlign:center\"><A HREF=\"").append(source).append("\">").append(source).append(
                 "</A></P>");
         content.append("</IFRAME>");
 
         // end fix JS2-349
         content.append("</TD></TR></TBODY></TABLE>");
 
         // set required content type and write HTML IFRAME content
         response.setContentType("text/html");
         response.getWriter().print(content.toString());
     }
 
     public String getURLSource(RenderRequest request, RenderResponse response, PortletPreferences prefs)
     {
         String source = getAttributePreference(prefs, "SRC");
         if (source == null) source = "";
         return source;
     }
 
     /***
      * Save the prefs
      */
     public void processAction(ActionRequest request, ActionResponse actionResponse) throws PortletException,
             IOException
     {
         processPreferencesAction(request, actionResponse);
     }
 
 }