001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.resource.loader;
018
019import java.lang.ref.WeakReference;
020import java.util.Locale;
021
022import org.apache.wicket.Component;
023import org.apache.wicket.util.lang.Args;
024
025/**
026 * This string resource loader attempts to find a single resource bundle that has the same name and
027 * location as the clazz provided in the constructor. If the bundle is found than strings are
028 * obtained from here. This implementation is fully aware of both locale and style values when
029 * trying to obtain the appropriate bundle.
030 * <p>
031 * An instance of this loader is registered with the Application by default.
032 * 
033 * @author Chris Turner
034 * @author Juergen Donnerstag
035 */
036public class ClassStringResourceLoader extends ComponentStringResourceLoader
037{
038        /** The application we are loading for. */
039        private final WeakReference<Class<?>> clazzRef;
040
041        /**
042         * Create and initialize the resource loader.
043         * 
044         * @param clazz
045         *            The class that this resource loader is associated with
046         */
047        public ClassStringResourceLoader(final Class<?> clazz)
048        {
049                Args.notNull(clazz, "clazz");
050                clazzRef = new WeakReference<>(clazz);
051        }
052
053        @Override
054        public String loadStringResource(final Class<?> clazz, final String key, final Locale locale,
055                final String style, final String variation)
056        {
057                return super.loadStringResource(clazzRef.get(), key, locale, style, variation);
058        }
059
060        @Override
061        public String loadStringResource(final Component component, final String key,
062                final Locale locale, final String style, final String variation)
063        {
064                if (component == null)
065                {
066                        return super.loadStringResource(clazzRef.get(), key, locale, style, variation);
067                }
068                return super.loadStringResource(component, key, locale, style, variation);
069        }
070}