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 org.apache.wicket.Component; 020import org.apache.wicket.IInitializer; 021import org.apache.wicket.util.lang.Args; 022 023import java.util.List; 024import java.util.Locale; 025 026 027/** 028 * This is one of Wicket's default string resource loaders. It is designed to let wicket extension 029 * modules contribute default resource bundles for their components. 030 * <p> 031 * The initializer based string resource loader attempts to find the resource from a bundle that 032 * corresponds to the supplied wicket initializers. 033 * <p> 034 * This implementation is fully aware of both locale and style values when trying to obtain the 035 * appropriate resources. 036 * <p> 037 * 038 * @author Bertrand Guay-Paquet 039 * @author Sven Meier 040 */ 041public class InitializerStringResourceLoader extends ComponentStringResourceLoader 042{ 043 private final List<IInitializer> initializers; 044 045 /** 046 * Create and initialize the resource loader. 047 * 048 * @param initializers 049 * initializers 050 */ 051 public InitializerStringResourceLoader(List<IInitializer> initializers) 052 { 053 this.initializers = Args.notNull(initializers, "initializers"); 054 } 055 056 @Override 057 public String loadStringResource(Class<?> clazz, final String key, final Locale locale, 058 final String style, final String variation) 059 { 060 061 for (IInitializer initializer : initializers) 062 { 063 String string = super.loadStringResource(initializer.getClass(), key, locale, style, 064 variation); 065 if (string != null) 066 { 067 return string; 068 } 069 } 070 071 // not found 072 return null; 073 } 074 075 @Override 076 public String loadStringResource(final Component component, final String key, 077 final Locale locale, final String style, final String variation) 078 { 079 return loadStringResource((Class<?>)null, key, locale, style, variation); 080 } 081}