001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.services.impl;
016    
017    import java.util.Locale;
018    import java.util.Properties;
019    
020    import org.apache.hivemind.impl.AbstractMessages;
021    import org.apache.hivemind.util.Defense;
022    
023    /**
024     * Implementation of {@link org.apache.hivemind.Messages}. This is basically a wrapper around an
025     * instance of {@link Properties}. This ensures that the properties are, in fact, read-only (which
026     * ensures that they don't have to be synchronized).
027     * 
028     * @author Howard Lewis Ship
029     * @since 2.0.4
030     */
031    
032    public class ComponentMessages extends AbstractMessages
033    {
034        private final Properties _properties;
035    
036        private final Locale _locale;
037    
038        public ComponentMessages(Locale locale, Properties properties)
039        {
040            Defense.notNull(locale, "locale");
041            Defense.notNull(properties, "properties");
042    
043            _locale = locale;
044            _properties = properties;
045        }
046    
047        protected String findMessage(String key)
048        {
049            return _properties.getProperty(key);
050        }
051    
052        protected Locale getLocale()
053        {
054            return _locale;
055        }
056    }