/*

  * 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 javax.faces.component.UIComponent;

 import javax.faces.component.html.HtmlOutputLabel;

 import javax.faces.context.FacesContext;

 import javax.faces.context.ResponseWriter;

 import javax.faces.internal.IgnoreAttribute;

 import org.seasar.teeda.core.JsfConstants;

 import org.seasar.teeda.core.render.AbstractRenderer;

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

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

 /**

  * @author manhole

  */

 public class HtmlOutputLabelRenderer extends AbstractRenderer {

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

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

     private final IgnoreAttribute ignoreComponent = new IgnoreAttribute();

     {

         ignoreComponent.addAttributeName(JsfConstants.ID_ATTR);

         ignoreComponent.addAttributeName(JsfConstants.VALUE_ATTR);

         ignoreComponent.addAttributeName(JsfConstants.FOR_ATTR);

     }

     public void encodeBegin(final FacesContext context,

             final UIComponent component) throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlOutputLabelBegin(context, (HtmlOutputLabel) component);

     }

     protected void encodeHtmlOutputLabelBegin(final FacesContext context,

             final HtmlOutputLabel htmlOutputLabel) throws IOException {

         final ResponseWriter writer = context.getResponseWriter();

         writer.startElement(JsfConstants.LABEL_ELEM, htmlOutputLabel);

         RendererUtil.renderIdAttributeIfNecessary(writer, htmlOutputLabel,

                 getIdForRender(context, htmlOutputLabel));

         final String forAttr = htmlOutputLabel.getFor();

         if (forAttr != null) {

             final UIComponent forComponent = htmlOutputLabel

                     .findComponent(forAttr);

             if (forComponent == null) {

                 throw new IllegalStateException("for Component [" + forAttr

                         + "] does not found");

             }

             final String forClientId = getIdForRender(context, forComponent);

             RendererUtil.renderAttribute(writer, JsfConstants.FOR_ATTR,

                     forClientId, null);

         }

         renderRemainAttributes(htmlOutputLabel, writer, ignoreComponent);

         final String value = ValueHolderUtil.getValueForRender(context,

                 htmlOutputLabel);

         writer.writeText(value, null);

     }

     public void encodeEnd(final FacesContext context,

             final UIComponent component) throws IOException {

         assertNotNull(context, component);

         if (!component.isRendered()) {

             return;

         }

         encodeHtmlOutputLabelEnd(context, (HtmlOutputLabel) component);

     }

     protected void encodeHtmlOutputLabelEnd(final FacesContext context,

             final HtmlOutputLabel htmlOutputLabel) throws IOException {

         final ResponseWriter writer = context.getResponseWriter();

         writer.endElement(JsfConstants.LABEL_ELEM);

     }

 }