org.gatein.pc.samples.basic.PublicParameterPortlet Maven / Gradle / Ivy

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 * Lesser General Public License for more details.                            *
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package org.gatein.pc.samples.basic;

import javax.portlet.GenericPortlet;
import javax.portlet.ActionRequest;
import javax.portlet.RenderResponse;
import javax.portlet.ActionResponse;
import javax.portlet.PortletURL;
import javax.portlet.PortletException;
import javax.portlet.ProcessAction;
import javax.portlet.RenderRequest;
import java.util.Enumeration;
import java.util.Map;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * @author Julien Viet
 * @version $Revision: 630 $
 */
public class PublicParameterPortlet extends GenericPortlet
{

   @ProcessAction(name="update")
   public void update(ActionRequest req, ActionResponse resp) throws PortletException, IOException
   {
      Map publicParameters = req.getPublicParameterMap();

      //
      for (Map.Entry actionParameter : req.getPrivateParameterMap().entrySet())
      {
         String parameterName = actionParameter.getKey();
         String parameterValue = actionParameter.getValue()[0];
         String[] publicValues = publicParameters.get(parameterName);

         //
         if (parameterValue.length() > 0)
         {
            if (publicValues == null || !publicValues[0].equals(parameterValue))
            {
               resp.setRenderParameter(parameterName, parameterValue);
            }
         }
         else if (publicValues != null)
         {
            resp.removePublicRenderParameter(parameterName);
         }
      }
   }

   public void render(RenderRequest req, RenderResponse resp) throws PortletException, IOException
   {
      PortletURL actionURL = resp.createActionURL();
      actionURL.setParameter(ActionRequest.ACTION_NAME, "update");

      //
      PrintWriter writer = resp.getWriter();
      writer.print("");

      //
      for (Enumeration e = getPortletConfig().getPublicRenderParameterNames();e.hasMoreElements();)
      {
         String parameterName = e.nextElement();

         //
         String parameterValue = req.getParameter(parameterName);

         //
         writer.print("");

      }

      writer.println("");

      writer.print("" + parameterName + " ");

         if (parameterValue != null)
         {
            writer.print("");

            //
            PortletURL renderURL = resp.createRenderURL();
            renderURL.removePublicRenderParameter(parameterName);
            writer.println("Remove");
         }
         else
         {
            writer.print("");
         }
         writer.println();

         writer.println("");

      //
      writer.close();
   }
}