org.apache.wicket.resource.loader.ClassStringResourceLoader.java Source code

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Here is the source code for org.apache.wicket.resource.loader.ClassStringResourceLoader.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.resource.loader;

import java.lang.ref.WeakReference;
import java.util.Locale;

import org.apache.wicket.Component;
import org.apache.wicket.util.lang.Args;

/**
 * This string resource loader attempts to find a single resource bundle that has the same name and
 * location as the clazz provided in the constructor. If the bundle is found than strings are
 * obtained from here. This implementation is fully aware of both locale and style values when
 * trying to obtain the appropriate bundle.
 * <p>
 * An instance of this loader is registered with the Application by default.
 * 
 * @author Chris Turner
 * @author Juergen Donnerstag
 */
public class ClassStringResourceLoader extends ComponentStringResourceLoader {
    /** The application we are loading for. */
    private final WeakReference<Class<?>> clazzRef;

    /**
     * Create and initialize the resource loader.
     * 
     * @param clazz
     *            The class that this resource loader is associated with
     */
    public ClassStringResourceLoader(final Class<?> clazz) {
        Args.notNull(clazz, "clazz");
        clazzRef = new WeakReference<Class<?>>(clazz);
    }

    @Override
    public String loadStringResource(final Class<?> clazz, final String key, final Locale locale,
            final String style, final String variation) {
        return super.loadStringResource(clazzRef.get(), key, locale, style, variation);
    }

    @Override
    public String loadStringResource(final Component component, final String key, final Locale locale,
            final String style, final String variation) {
        if (component == null) {
            return super.loadStringResource(clazzRef.get(), key, locale, style, variation);
        }
        return super.loadStringResource(component, key, locale, style, variation);
    }
}