/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * 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.

  */

 package org.seasar.teeda.core.render.html;

 import java.io.IOException;

 import java.util.Iterator;

 import javax.faces.FacesException;

 import javax.faces.application.FacesMessage;

 import javax.faces.component.UIComponent;

 import javax.faces.component.html.HtmlMessage;

 import javax.faces.context.FacesContext;

 import org.seasar.framework.log.Logger;

 import org.seasar.teeda.core.util.RendererUtil;

 /**

  * @author manhole

  */

 public class HtmlMessageRenderer extends AbstractHtmlMessagesRenderer {

     public static final String COMPONENT_FAMILY = "javax.faces.Message";

     public static final String RENDERER_TYPE = "javax.faces.Message";

     private static final Logger logger = Logger

             .getLogger(HtmlMessageRenderer.class);

     public void encodeEnd(FacesContext context, UIComponent component)

             throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlMessageEnd(context, (HtmlMessage) component);

     }

     protected void encodeHtmlMessageEnd(FacesContext context,

             HtmlMessage htmlMessage) throws IOException {

         String forAttr = htmlMessage.getFor();

         if (forAttr == null) {

             throw new FacesException("for");

         }

         UIComponent forComponent = htmlMessage.findComponent(forAttr);

         if (forComponent == null) {

             logger.debug("[HtmlMessage] forComponent [" + forAttr

                     + "] is null. [id=" + htmlMessage.getId() + "]");

             return;

         }

         final String clientId = forComponent.getClientId(context);

         Iterator it = context.getMessages(clientId);

         if (!it.hasNext()) {

             return;

         }

         FacesMessage facesMassage = (FacesMessage) it.next();

         String idForRender = getIdForRenderOrNull(context, htmlMessage);

         renderOneMessage(context, htmlMessage, facesMassage, idForRender,

                 htmlMessage.getAttributes());

     }

     private String getIdForRenderOrNull(FacesContext context,

             HtmlMessage htmlMessage) {

         if (RendererUtil.shouldRenderIdAttribute(htmlMessage)) {

             return getIdForRender(context, htmlMessage);

         }

         return null;

     }

 }