/*

  * 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 java.text.MessageFormat;

 import java.util.ArrayList;

 import java.util.Iterator;

 import java.util.List;

 import javax.faces.component.UIComponent;

 import javax.faces.component.UIOutput;

 import javax.faces.component.UIParameter;

 import javax.faces.component.html.HtmlOutputFormat;

 import javax.faces.context.FacesContext;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFRenderer;

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

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

 import org.apache.myfaces.shared_impl.renderkit.html.HtmlRenderer;

 import org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase;

 /**

  * 

  * @author Manfred Geiler (latest modification by $Author: lu4242 $)

  * @author Thomas Spiegl

  * @version $Revision: 693358 $ $Date: 2008-09-08 22:54:29 -0500 (Mon, 08 Sep 2008) $

  */

 @JSFRenderer(

     renderKitId="HTML_BASIC",

     family="javax.faces.Output",

     type="javax.faces.Format")

 public class HtmlFormatRenderer

         extends HtmlRenderer

 {

     private static final Log log = LogFactory.getLog(HtmlFormatRenderer.class);

     private static final Object[] EMPTY_ARGS = new Object[0];

     public void encodeBegin(FacesContext facesContext, UIComponent uiComponent)

             throws IOException

     {

     }

     public void encodeChildren(FacesContext facescontext, UIComponent uicomponent)

             throws IOException

     {

     }

     public void encodeEnd(FacesContext facesContext, UIComponent component)

             throws IOException

     {

         RendererUtils.checkParamValidity(facesContext, component, UIOutput.class);

         String text = getOutputFormatText(facesContext, component);

         boolean isEscape;

         if (component instanceof HtmlOutputFormat)

         {

             isEscape = ((HtmlOutputFormat)component).isEscape();

         }

         else

         {

             isEscape = RendererUtils.getBooleanAttribute(component, JSFAttr.ESCAPE_ATTR, true);

         }

         HtmlTextRendererBase.renderOutputText(facesContext, component, text, isEscape);

     }

     private String getOutputFormatText(FacesContext facesContext,

                                        UIComponent htmlOutputFormat)

     {

         String pattern = RendererUtils.getStringValue(facesContext, htmlOutputFormat);

         Object[] args;

         if (htmlOutputFormat.getChildCount() == 0)

         {

             args = EMPTY_ARGS;

         }

         else

         {

             List argsList = new ArrayList();

             for (Iterator it = htmlOutputFormat.getChildren().iterator(); it.hasNext(); )

             {

                 UIComponent child = (UIComponent)it.next();

                 if (child instanceof UIParameter)

                 {

                     argsList.add(((UIParameter)child).getValue());

                 }

             }

             args = argsList.toArray(new Object[argsList.size()]);

         }

         MessageFormat format = new MessageFormat(pattern, facesContext.getViewRoot().getLocale());

         try

         {

             return format.format(args);

         }

         catch (Exception e)

         {

             log.error("Error formatting message of component " + htmlOutputFormat.getClientId(facesContext));

             return "";

         }

     }

 }