001    // Copyright 2006 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.tapestry5.internal.services;
016    
017    /**
018     * An implementation  of {@link Messages} that is based on a map.
019     *
020     */
021    
022    import org.apache.tapestry5.ioc.Messages;
023    import org.apache.tapestry5.ioc.util.AbstractMessages;
024    
025    import java.util.Locale;
026    import java.util.Map;
027    
028    /**
029     * Implementation of {@link Messages} based on a simple Map (of string keys and values).
030     */
031    public class MapMessages extends AbstractMessages
032    {
033        private final Map<String, String> properties;
034    
035    
036        /**
037         * A new instance <strong>retaining</strong> (not copying) the provided map.
038         */
039        public MapMessages(Locale locale, Map<String, String> properties)
040        {
041            super(locale);
042    
043            this.properties = properties;
044        }
045    
046    
047        @Override
048        protected String valueForKey(String key)
049        {
050            return properties.get(key);
051        }
052    }