/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.myfaces.renderkit.html;
  
  import java.io.IOException;
  
  import javax.faces.component.UIComponent;
  import javax.faces.component.UIInput;
  import javax.faces.component.UIOutput;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  import javax.faces.convert.ConverterException;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFRenderer;
  import org.apache.myfaces.shared.renderkit.JSFAttr;
  import org.apache.myfaces.shared.renderkit.RendererUtils;
  import org.apache.myfaces.shared.renderkit.html.HTML;
  import org.apache.myfaces.shared.renderkit.html.HtmlRenderer;
  import org.apache.myfaces.shared.renderkit.html.HtmlRendererUtils;
  
  /**
   * 
   * @author Thomas Spiegl (latest modification by $Author$)
   * @author Anton Koinov
   * @version $Revision$ $Date$
   */
  @JSFRenderer(renderKitId = "HTML_BASIC", family = "javax.faces.Input", type = "javax.faces.Hidden")
  public class HtmlHiddenRenderer extends HtmlRenderer
  {
      @Override
      public void encodeEnd(FacesContext facesContext, UIComponent uiComponent) throws IOException
      {
          RendererUtils.checkParamValidity(facesContext, uiComponent, UIInput.class);
  
          ResponseWriter writer = facesContext.getResponseWriter();
  
          writer.startElement(HTML.INPUT_ELEM, uiComponent);
          writer.writeAttribute(HTML.TYPE_ATTR, HTML.INPUT_TYPE_HIDDEN, null);
  
          String clientId = uiComponent.getClientId(facesContext);
          writer.writeAttribute(HTML.ID_ATTR, clientId, null);
          writer.writeAttribute(HTML.NAME_ATTR, clientId, null);
  
          String value = RendererUtils.getStringValue(facesContext, uiComponent);
          if (value != null)
          {
              writer.writeAttribute(HTML.VALUE_ATTR, value, JSFAttr.VALUE_ATTR);
          }
  
          writer.endElement(HTML.INPUT_ELEM);
      }
  
      @Override
      public Object getConvertedValue(FacesContext facesContext, UIComponent uiComponent, Object submittedValue)
          throws ConverterException
      {
          RendererUtils.checkParamValidity(facesContext, uiComponent, UIOutput.class);
          return RendererUtils.getConvertedUIOutputValue(facesContext, (UIOutput)uiComponent, submittedValue);
      }
  
      @Override
      public void decode(FacesContext facesContext, UIComponent component)
      {
          RendererUtils.checkParamValidity(facesContext, component, null);
  
          if (component instanceof UIInput)
          {
              HtmlRendererUtils.decodeUIInput(facesContext, component);
          }
          else
          {
              throw new IllegalArgumentException("Unsupported component class " + component.getClass().getName());
          }
      }
  
  }