package org.apache.jetspeed.services.jsp.tags;
   
   /*
    * Copyright 2000-2001,2004 The Apache Software Foundation.
    * 
    * Licensed 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.
   */
  
  // Servlet API
  import javax.servlet.jsp.JspException;
  import javax.servlet.jsp.PageContext;
  import javax.servlet.jsp.tagext.TagSupport;
  
  // Turbine Classes
  import org.apache.turbine.util.DynamicURI;
  import org.apache.turbine.services.jsp.JspService;
  
  // ECS support
  import org.apache.ecs.ConcreteElement;
  import org.apache.ecs.StringElement;
  
  // Jetspeed support
  import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
  import org.apache.jetspeed.services.logging.JetspeedLogger;
  import org.apache.jetspeed.services.rundata.JetspeedRunData;
  import org.apache.jetspeed.om.profile.ProfileLocator;
  import org.apache.jetspeed.om.profile.Profile;
  import org.apache.jetspeed.services.Profiler;
  import org.apache.jetspeed.util.template.JetspeedLink;
  import org.apache.jetspeed.util.template.JetspeedLinkFactory;
  
  /***
   * Supporting class for the portlet link tag.
   * Builds a link to displaying a portlet in specified view and insert it within the
   * current JSP page. If js_peid is specified it is used as is. Otherwise, the js_peid
   * is derived from the first portlet in profile matching specified portlet name.
   *
   * @author <a href="mailto:morciuch@apache.org">Mark Orciuch</a>
   * @version $Id: JetspeedPortletLinkTag.java,v 1.4 2004/02/23 03:59:40 jford Exp $
   */
  public class JetspeedPortletLinkTag extends TagSupport
  {
      /***
       * Static initialization of the logger for this class
       */    
      private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(JetspeedPortletLinkTag.class.getName());
      
      private String name = null;
      private String jspeid = null;
      private String psml = null;
      private String action = null;
  
      public void setName(String name)
      {
          this.name = name;
      }
  
      public String getName()
      {
          return this.name;
      }
  
      public void setPsml(String psml)
      {
          this.psml = psml;
      }
  
      public String getPsml()
      {
          return this.psml;
      }
  
      public void setJspeid(String value)
      {
          this.jspeid = value;
      }
  
      public String getJspeid()
      {
          return this.jspeid;
      }
  
      public void setAction(String value)
      {
          this.action = value;
      }
  
      public String getAction()
      {
         return this.action;
     }
 
     /***
      * Method called when the tag is encountered to send attributes to the
      * output stream
      *
      * @return SKIP_BODY, as it is intended to be a single tag.
      */
     public int doStartTag() throws JspException
     {
         JetspeedRunData data = (JetspeedRunData) pageContext.getAttribute(JspService.RUNDATA, PageContext.REQUEST_SCOPE);
         
         try
         {
             ConcreteElement result = null;
             Profile baseProfile = null;
             ProfileLocator baseLocator = Profiler.createLocator();
             int rootType = JetspeedLink.DEFAULT;
             String rootValue = null;
             int elementType = JetspeedLink.DEFAULT;
             String elementValue = null;
 
             // Create locator to retrieve profile settings
             if (this.psml != null)
             {
                baseLocator.createFromPath(this.psml);
                if (baseLocator.getUser() != null)
                {
                    rootType = JetspeedLink.USER;
                    rootValue = baseLocator.getUserName();
                } 
                else if (baseLocator.getRole() != null)
                {
                    rootType = JetspeedLink.ROLE;
                    rootValue = baseLocator.getRoleName();
                }
                else if (baseLocator.getGroup() != null)
                {
                    rootType = JetspeedLink.GROUP;
                    rootValue = baseLocator.getGroupName();
                }
             }
             else
             {
                rootType = JetspeedLink.CURRENT;
                rootValue = "";
                baseProfile = data.getProfile();
                baseLocator.createFromPath(baseProfile.getPath());
             }
 
             //  Determine search method
             if (baseLocator != null)
             {                
                 // search by portlet name
                 if (this.name != null)
                 {
                     elementType = JetspeedLink.PORTLET_ID_QUERY;
                     elementValue = this.name;
                 }
                 else if (this.jspeid != null)
                 {
                     elementType = JetspeedLink.PORTLET_ID;
                     elementValue = this.jspeid;
                 }
                 // Build the link
                 JetspeedLink link = JetspeedLinkFactory.getInstance(data);
                 DynamicURI uri = link.getLink(rootType,
                                               rootValue,
                                               baseLocator.getName(),
                                               elementType,
                                               elementValue,
                                               this.action == null ? "controls.Maximize" : this.action,
                                               null,
                                               baseLocator.getMediaType(),
                                               baseLocator.getLanguage(),
                                               baseLocator.getCountry());
                 result = new StringElement(uri.toString());
                 JetspeedLinkFactory.putInstance(link);
             }
 
             // Output the result
             if (result != null) 
             {
                 pageContext.getOut().print(result);
             }
 
         }
         catch (Exception e)
         {
             String message = "Error processing name '" + name + "'.";
             logger.error(message, e);
             try
             {
                 data.getOut().print("Error processing portlet '" + name + "'. See log for more information.");
             }
             catch (java.io.IOException ioe) 
             {
             }
         }
         return EVAL_BODY_INCLUDE;
     }
 }