Source code: com/sample/addressbook/view/contact/ContactEditView.java

   /*
    * ContactEditView.java
    *
    * Copyright (c) 2001, 2002 Aendvari, Ltd. All Rights Reserved.
    *
    * See the file LICENSE for terms of use.
    *
    */
   
  package com.sample.addressbook.view.contact;
  
  import java.util.Iterator;
  import java.util.Collection;
  
  import javax.servlet.*;
  import javax.servlet.http.*;
  
  import com.aendvari.common.util.*;
  import com.aendvari.common.model.*;
  import com.aendvari.common.notices.*;
  
  import com.aendvari.tethys.context.*;
  import com.aendvari.tethys.context.message.*;
  
  import com.aendvari.tethys.tag.message.*;
  
  import com.aendvari.cerberus.component.descriptor.ComponentDescriptor;
  
  import com.aendvari.cerberus.component.assembly.AssembledComponent;
  import com.aendvari.cerberus.component.assembly.AssemblyContext;
  
  import com.aendvari.hermes.broker.*;
  import com.aendvari.hermes.broker.http.*;
  
  import com.sample.addressbook.Names;
  import com.sample.addressbook.view.util.*;
  
  
  /**
   * <p>Displays the modify/create contact form.</p>
   *
   * @author  Scott Milne
   *
   */
  
  public class ContactEditView implements AssembledComponent
  {
    protected ComponentDescriptor descriptor;
    protected String model;
  
  
    /* Constructors. */
  
  
    /**
     * Constructs a <code>ContactEditView</code> instance.
     *
     */
  
    public ContactEditView()
    {
    }
  
    /**
     * Creates the component based on the provided descriptor.
     *
     * The {@link AssemblyContext} object is transient and should not be retained
     * by the component.
     *
     * The {@link ComponentDescriptor} may be retained by the component.
     *
     * @param    context            The {@link AssemblyContext} for this component.
     * @param    descriptor          The {@link ComponentDescriptor} for this component.
     *
     */
  
    public void createComponent(AssemblyContext context, ComponentDescriptor descriptor)
    {
      MessageBrokerConnection connection = context.getMessageBroker().createConnection();
  
      // subscribe to the topic associated with the "display" message
      connection.subscribe(descriptor.getMessage("display").getTopic(), new ContactListener());
  
      // store descriptor
      this.descriptor = descriptor;
  
      // retrieve information
      model = descriptor.getAttribute("model").getValue();
    }
  
    class ContactListener implements MessageListener
    {
      public void onMessage(Message message)
      {
        // retrieve web objects
        HttpServletRequest request = HttpMessageBrokerContext.getRequest(message.getContext());
        HttpServletResponse response = HttpMessageBrokerContext.getResponse(message.getContext());
        HttpSession session = HttpMessageBrokerContext.getSession(message.getContext());
  
       // get the message tag data for the page
       MessageTagData messageTagData = MessageTagData.getData(request);
 
       // check for error messages
       ContactViewUtil.checkForErrorMessages(descriptor, message, request);
       
       // create the "contact" context
       ContactViewUtil.createContactContext(request, model);
 
       // get the "includeResource" topic
       String includeResource = descriptor.getAttribute("includeResource").getValue();
 
       // set the attribute for what page should be loaded
       request.setAttribute(Names.Constants.IncludeResource, includeResource);
 
       // get the edit message and create a mapping for it
       String editMessage = descriptor.getMessage("edit").getTopic();
       MessageMapping mapping = new MessageMapping("edit", editMessage);
       messageTagData.getMessageMappingMap().addContext(mapping);
     }
   }
 }