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JSF components and utilities that can be used with any JSF implementation. This library is compatible with both JSF1.1 and JSF1.2; however for JSF1.2 users there is an alternative build of Tomahawk available that takes advantage of JSF1.2 features to offer some additional benefits.
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/*
 * 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.ext;

import org.apache.myfaces.component.html.ext.HtmlMessage;
import org.apache.myfaces.component.html.ext.HtmlMessages;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlMessagesRendererBase;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.text.MessageFormat;

/**
 * @JSFRenderer
 *   renderKitId = "HTML_BASIC"
 *   family = "javax.faces.Messages"
 *   type = "org.apache.myfaces.Messages"
 * 
 * @author Manfred Geiler (latest modification by $Author: lu4242 $)
 * @version $Revision: 659874 $ $Date: 2008-05-24 15:59:15 -0500 (Sat, 24 May 2008) $
 */
public class HtmlMessagesRenderer
        extends HtmlMessagesRendererBase
{
    //private static final Log log = LogFactory.getLog(HtmlMessagesRenderer.class);


    public void encodeEnd(FacesContext facesContext, UIComponent component)
            throws IOException
    {
        super.encodeEnd(facesContext, component);   //check for NP
        renderMessages(facesContext, component);

        if (component instanceof HtmlMessages
                && ((HtmlMessages) component).getForceSpan())
        {
            ResponseWriter writer = facesContext.getResponseWriter();

            HtmlMessages htmlMessages = (HtmlMessages) component;

            writer.startElement(HTML.SPAN_ELEM, null);
            writer.writeAttribute(HTML.ID_ATTR,component.getClientId(facesContext),null);
            if(htmlMessages.getStyleClass()!=null)
            writer.writeAttribute(HTML.CLASS_ATTR,htmlMessages.getStyleClass(),null);
            if(htmlMessages.getStyle()!=null)
            writer.writeAttribute(HTML.STYLE_ATTR,htmlMessages.getStyle(),null);
            writer.endElement(HTML.SPAN_ELEM);
        }
    }

    protected String getSummary(FacesContext facesContext,
                                UIComponent message,
                                FacesMessage facesMessage,
                                String msgClientId)
    {
        String msgSummary = facesMessage.getSummary();
        if (msgSummary == null) return null;

        String inputLabel = null;
        if (msgClientId != null) inputLabel = HtmlMessageRenderer.findInputLabel(facesContext, msgClientId);
        if (inputLabel == null) inputLabel = "";

        if(((message instanceof HtmlMessages && ((HtmlMessages) message).isReplaceIdWithLabel()) ||
                (message instanceof HtmlMessage && ((HtmlMessage) message).isReplaceIdWithLabel()))&&
                inputLabel.length()!=0)
            msgSummary = msgSummary.replaceAll(HtmlMessageRenderer.findInputId(facesContext, msgClientId),inputLabel);


        String summaryFormat;
        if (msgClientId == null)
        {
            summaryFormat = getGlobalSummaryFormat(message);
            if (summaryFormat == null)
            {
                summaryFormat = getSummaryFormat(message);
            }
        }
        else
        {
            summaryFormat = getSummaryFormat(message);
        }
        if (summaryFormat == null) return msgSummary;

        MessageFormat format = new MessageFormat(summaryFormat, facesContext.getViewRoot().getLocale());
        return format.format(new Object[] {msgSummary, inputLabel});
    }


    private String getSummaryFormat(UIComponent message)
    {
        if (message instanceof HtmlMessages)
        {
            return ((HtmlMessages)message).getSummaryFormat();
        }
        else
        {
            return (String)message.getAttributes().get("summaryFormat");
        }
    }

    private String getGlobalSummaryFormat(UIComponent message)
    {
        if (message instanceof HtmlMessages)
        {
            return ((HtmlMessages)message).getGlobalSummaryFormat();
        }
        else
        {
            return (String)message.getAttributes().get("globalSummaryFormat");
        }
    }

    protected String getDetail(FacesContext facesContext,
                               UIComponent message,
                               FacesMessage facesMessage,
                               String msgClientId)
    {
        String msgDetail = facesMessage.getDetail();
        if (msgDetail == null) return null;

        String inputLabel = null;
        if (msgClientId != null) inputLabel = HtmlMessageRenderer.findInputLabel(facesContext, msgClientId);
        if (inputLabel == null) inputLabel = "";

        if(((message instanceof HtmlMessages && ((HtmlMessages) message).isReplaceIdWithLabel()) ||
                (message instanceof HtmlMessage && ((HtmlMessage) message).isReplaceIdWithLabel()))&&
                inputLabel.length()!=0)
            msgDetail = msgDetail.replaceAll(HtmlMessageRenderer.findInputId(facesContext, msgClientId),inputLabel);

        String detailFormat;
        if (message instanceof HtmlMessage)
        {
            detailFormat = ((HtmlMessage)message).getDetailFormat();
        }
        else
        {
            detailFormat = (String)message.getAttributes().get("detailFormat");
        }

        if (detailFormat == null) return msgDetail;

        MessageFormat format = new MessageFormat(detailFormat, facesContext.getViewRoot().getLocale());
        return format.format(new Object[] {msgDetail, inputLabel});
    }


}