Basically I have a content display portlet that will display a file from Alfresco's CMS repository. Now if the file it displays happens to have HTML links to other files in Alfresco's repository, I want it to link back to the portlet with that file as a parameter.

I was able to get this to work with just 1 portlet successfully....the content itself will simply have a relative link to a file in the repository and the portlet will scan for any links and superimpose a response.createActionURL() into them so that they actually send the filepath as a parameter to the portlet.

So the code that does this is below. What I'm wondering is if I even need the Listener since the portlet is just sending an action to itself? Is the Listener / service stuff only needed for other portlets to call each other? This is of course just POC/Experimenting code here.

public class ContentDisplay extends JBossPortlet
{
 private String RootReferencePath = "/app:company_home";


 public void processAction(JBossActionRequest request, JBossActionResponse response) throws PortletException, PortletSecurityException, IOException
 {
 String filename = request.getParameter("filename");
 if(filename != null)
 response.setRenderParameter("filename",filename);
 }


 protected void doView(JBossRenderRequest rRequest, JBossRenderResponse rResponse) throws PortletException, PortletSecurityException, IOException
 {
 String filename = rRequest.getParameter("filename");

 if(filename == null)
 filename = "index.html";


 AuthenticationUtils.startSession("admin", "admin");
 EngineConfiguration config = AuthenticationUtils.getEngineConfiguration();


 try
 {
 rResponse.setContentType("text/html");
 PrintWriter writer = rResponse.getWriter();

 Store STORE = new Store(StoreEnum.workspace, "SpacesStore"); //Root store for Alfresco

 filename = filename.replaceAll("/","/cm:");


 String refPath = RootReferencePath + "/cm:"+filename;

 Reference reference = new Reference(STORE, null,refPath);

 ContentServiceLocator contServLocator = new ContentServiceLocator(config);
 ContentServiceSoapPort contService = (ContentServiceSoapPort)contServLocator.getContentService();
 Content[] readResult = contService.read(new Predicate(new Reference[]{reference}, STORE, null), Constants.PROP_CONTENT);

 Content content = readResult[0];

 String contentUrl = content.getUrl() + "?ticket="+AuthenticationUtils.getCurrentTicket();

 StringBuilder content2Print = new StringBuilder();

 URL url = new URL(contentUrl);
 URLConnection conn = url.openConnection();
 BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));

 content2Print.append(br.readLine());
 while (br.ready())
 {
 content2Print.append(br.readLine());
 }

 String finalContent = content2Print.toString();
 Pattern oldLinks = Pattern.compile("<a href=\"\$");
 finalContent = oldLinks.matcher(finalContent).replaceAll("<a href=\""+rResponse.createActionURL()+"&filename=");

 writer.write(finalContent);
 writer.close();
 }
 catch(Throwable e)
 {
 Log.error(this,"Something bad happened: ",e);
 }
 finally
 {
 AuthenticationUtils.endSession();
 }
 }

 public static class Listener implements PortalNodeEventListener
 {
 public PortalNodeEvent onEvent(PortalNodeEventBubbler bubbler, PortalNodeEvent event)
 {
 PortalNode node = event.getNode();
 String nodeName = node.getName();

 WindowActionEvent newEvent = null;
 if(nodeName.equals("ContentDisplayPortlet") && event instanceof WindowActionEvent)
 {
 WindowActionEvent wae = (WindowActionEvent) event;
 if(node != null)
 {
 newEvent = new WindowActionEvent(node);
 newEvent.setMode(wae.getMode());
 newEvent.setParameters(wae.getParameters());
 }
 }
 if(newEvent != null)
 return newEvent;
 else
 return bubbler.dispatch(event);
 }
 }

}