/* Copyright 2010 ESRI
* 
* All rights reserved under the copyright laws of the United States
* and applicable international laws, treaties, and conventions.
* 
* You may freely redistribute and use this sample code, with or
* without modification, provided you include the original copyright
* notice and use restrictions.
* 
* See the use restrictions.
* 
*/
package com.esri.customtask;

import java.util.logging.Level;
import java.util.logging.Logger;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;

import org.w3c.dom.Element;

import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.faces.component.MapControl;
import com.esri.adf.web.faces.renderkit.xml.ajax.AJAXRenderer;
import com.esri.adf.web.util.WebUtil;
import com.esri.adf.web.util.XMLUtil;

public class HyperlinkRenderer implements AJAXRenderer {
  /** the xml tag for postback processing */
  public static String xmlTag = "hyperlink";

  /** the name of the webContext attribute which stores the hyperlink string */
  public static String attrName = "hyperlinkstr";

  private static Logger logger = Logger.getLogger(HyperlinkRenderer.class.getName());

  public Class getControlClass() {
    return MapControl.class;
  }

  public Object getOriginalState(UIComponent component) {
    return null;
  }

  public void renderAjaxResponse(FacesContext facesContext, UIComponent component, Object state, boolean iseventSource,
      Element parentElement) {
    try {
      WebContext ctx = WebUtil.getWebContext(component);
      if (ctx.getAttribute(attrName) == null)
        return;

      String linkstr = (String) ctx.getAttribute(attrName);

      // render xml document fragment for updating on client
      // set tag name for custom postback processing content
      Element rootElement = XMLUtil.createElement(xmlTag, null, parentElement);

      // add content to xml
      // e.g. <value>http://esri.com</value>
      XMLUtil.createElement("value", linkstr, rootElement);

      // set the webcontext attribute for hyperlink back to null
      ctx.setAttribute(attrName, null);
    } catch (Exception e) {
      if (logger.isLoggable(Level.WARNING)) {
        logger.log(Level.WARNING, "Unable to encode xml.", e);
      }
    }
  }
}