/*

  * 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.Map;

 import javax.faces.component.UIComponent;

 import javax.faces.component.UIOutput;

 import javax.faces.component.html.HtmlSelectOneListbox;

 import javax.faces.context.ExternalContext;

 import javax.faces.context.FacesContext;

 import javax.faces.context.ResponseWriter;

 import javax.faces.convert.ConverterException;

 import javax.faces.el.ValueBinding;

 import org.seasar.teeda.core.JsfConstants;

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

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

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

 /**

  * @author manhole

  */

 public class HtmlSelectOneListboxRenderer extends HtmlSelectManyListboxRenderer {

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

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

     protected void renderMultiple(FacesContext context, UIComponent component,

             ResponseWriter writer) throws IOException {

     }

     protected String[] getValuesForRender(FacesContext context,

             UIComponent component) {

         final ExternalContext externalContext = context.getExternalContext();

         final Map requestMap = externalContext.getRequestMap();

         final String value = ValueHolderUtil.getValueForRender(context, component);

         if (value == null) {

             return null;

         }

         if (!PostbackUtil.isPostback(requestMap)) {

             final ValueBinding vb = component.getValueBinding("value");

             if (vb != null) {

                 final Class type = vb.getType(context);

                 if (type.isPrimitive() && value.equals("0")) {

                     return null;

                 }

             }

         }

         return new String[] { value };

     }

     public void decode(FacesContext context, UIComponent component) {

         assertNotNull(context, component);

         getDecoder().decode(context, component);

     }

     public Object getConvertedValue(FacesContext context,

             UIComponent component, Object submittedValue)

             throws ConverterException {

         assertNotNull(context, component);

         return RendererUtil.getConvertedUIOutputValue(context,

                 (UIOutput) component, submittedValue);

     }

     protected void renderStyleClass(FacesContext context,

             UIComponent component, ResponseWriter writer) throws IOException {

         HtmlSelectOneListbox htmlSelectOneListbox = (HtmlSelectOneListbox) component;

         final String styleClass = htmlSelectOneListbox.getStyleClass();

         RendererUtil.renderAttribute(writer, JsfConstants.STYLE_CLASS_ATTR,

                 styleClass);

     }

 }