    001// Copyright 2006, 2012 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
    015package org.apache.tapestry5.internal.services;
    016
    017/**
    018 * An implementation  of {@link Messages} that is based on a map.
    019 *
    020 */
    021
    022import org.apache.tapestry5.ioc.Messages;
    023import org.apache.tapestry5.ioc.util.AbstractMessages;
    024
    025import java.util.Locale;
    026import java.util.Map;
    027import java.util.Set;
    028
    029/**
    030 * Implementation of {@link Messages} based on a simple Map (of string keys and values).
    031 */
    032public class MapMessages extends AbstractMessages
    033{
    034    private final Map<String, String> properties;
    035
    036
    037    /**
    038     * A new instance <strong>retaining</strong> (not copying) the provided map.
    039     */
    040    public MapMessages(Locale locale, Map<String, String> properties)
    041    {
    042        super(locale);
    043
    044        this.properties = properties;
    045    }
    046
    047
    048    @Override
    049    protected String valueForKey(String key)
    050    {
    051        return properties.get(key);
    052    }
    053
    054    public Set<String> getKeys()
    055    {
    056        return properties.keySet();
    057    }
    058}