001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *   http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    
020    package org.apache.myfaces.tobago.util;
021    
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import org.apache.myfaces.tobago.context.ResourceManagerUtil;
025    
026    import javax.faces.application.FacesMessage;
027    import javax.faces.context.FacesContext;
028    import java.util.HashMap;
029    import java.util.Locale;
030    import java.util.Map;
031    import java.util.ResourceBundle;
032    import java.text.MessageFormat;
033    
034    /*
035     * User: weber
036     * Date: Jun 14, 2005
037     * Time: 5:40:04 PM
038     */
039    public class MessageFactory {
040    
041      private static final Log LOG = LogFactory.getLog(MessageFactory.class);
042    
043      private static Map<Locale, ResourceBundle> facesMessagesMap
044          = new HashMap<Locale, ResourceBundle>();
045    
046      public static FacesMessage createFacesMessage(FacesContext facesContext,
047          String key, FacesMessage.Severity severity, Object[] args) {
048        return createFacesMessage(facesContext, "tobago", key, severity, args);
049      }
050    
051      public static FacesMessage createFacesMessage(FacesContext facesContext,
052          String key, FacesMessage.Severity severity) {
053        return createFacesMessage(facesContext, key, severity, new Object[0]);
054      }
055    
056      public static FacesMessage createFacesMessage(FacesContext facesContext,
057          String bundle, String key, FacesMessage.Severity severity, Object[] args) {
058        String summary = getMessageText(facesContext, bundle, key);
059        String detail = getMessageText(facesContext, bundle, key + "_detail");
060        if (args != null && args.length > 0) {
061          if (summary != null) {
062            MessageFormat format = new MessageFormat(summary, facesContext.getViewRoot().getLocale());
063            summary = format.format(args);
064          }
065    
066          if (detail != null) {
067            MessageFormat format = new MessageFormat(detail, facesContext.getViewRoot().getLocale());
068            detail = format.format(args);
069          }
070        }
071        return new FacesMessage(severity, summary != null ? summary : key, detail);
072      }
073    
074      public static FacesMessage createFacesMessage(FacesContext facesContext,
075          String bundle, String key, FacesMessage.Severity severity) {
076        return createFacesMessage(facesContext, bundle, key, severity, new Object[0]);
077      }
078    
079      private static String getMessageText(
080          FacesContext facesContext, String bundle, String key) {
081        String message = ResourceManagerUtil.getProperty(facesContext, bundle, key);
082        if (message == null || message.length() < 1) {
083          try {
084            Locale locale = facesContext.getViewRoot().getLocale();
085            message = getFacesMessages(locale).getString(key);
086          } catch (Exception e) {
087            /* ignore at this point */
088          }
089        }
090        return message;
091      }
092    
093      private static ResourceBundle getFacesMessages(Locale locale) {
094        ResourceBundle facesMessages = facesMessagesMap.get(locale);
095        if (facesMessages == null) {
096          facesMessages
097              = ResourceBundle.getBundle(FacesMessage.FACES_MESSAGES, locale);
098          facesMessagesMap.put(locale, facesMessages);
099        }
100        return facesMessages;
101      }
102    }