htmlhiddenrenderer.java

一个使用struts+hibernate+spring开发的完的网站源代码。

/*
 * Copyright 2004 The Apache Software Foundation.
 * 
 * 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.apache.myfaces.renderkit.html;

import org.apache.myfaces.renderkit.JSFAttr;
import org.apache.myfaces.renderkit.RendererUtils;

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 java.io.IOException;


/**
 * @author Thomas Spiegl (latest modification by $Author: matze $)
 * @author Anton Koinov
 * @version $Revision: 1.11 $ $Date: 2004/10/13 11:51:00 $
 * $Log: HtmlHiddenRenderer.java,v $
 * Revision 1.11  2004/10/13 11:51:00  matze
 * renamed packages to org.apache
 *
 * Revision 1.10  2004/07/01 22:05:06  mwessendorf
 * ASF switch
 *
 * Revision 1.9  2004/05/12 07:57:44  manolito
 * Log in javadoc header
 *
 * Revision 1.8  2004/05/05 21:22:50  o_rossmueller
 * fix #948110: decode for hidden fields
 *
 * Revision 1.7  2004/03/26 13:34:04  manolito
 * fixed value attribute output
 */
public class HtmlHiddenRenderer
extends HtmlRenderer
{
    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);
    }

    public Object getConvertedValue(FacesContext facesContext, UIComponent uiComponent, Object submittedValue) throws ConverterException
    {
        RendererUtils.checkParamValidity(facesContext, uiComponent, UIOutput.class);
        return RendererUtils.getConvertedUIOutputValue(facesContext,
                                                       (UIOutput)uiComponent,
                                                       submittedValue);
    }

    
    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());
         }
     }

}