org.lastaflute.thymeleaf.message.resolver.ManagedMessageResolver Maven / Gradle / Ivy

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/*
 * Copyright 2015-2024 the original author or authors.
 *
 * Licensed 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.lastaflute.thymeleaf.message.resolver;

import java.util.Locale;

import org.lastaflute.core.message.MessageManager;
import org.lastaflute.core.util.ContainerUtil;
import org.thymeleaf.context.ITemplateContext;
import org.thymeleaf.messageresolver.AbstractMessageResolver;

/**
 * @author jflute
 */
public class ManagedMessageResolver extends AbstractMessageResolver {

    protected final MessageManager messageManager;

    public ManagedMessageResolver() {
        messageManager = ContainerUtil.getComponent(MessageManager.class);
    }

    @Override
    public String resolveMessage(ITemplateContext context, Class origin, String key, Object[] messageParameters) {
        // basically this locale is synchronized with requestManager's user locale
        // (WebContext is created by ThymeleafHtmlRenderer)
        final Locale locale = context.getLocale();
        return messageManager.findMessage(locale, key, messageParameters).orElse(null);
    }

    @Override
    public String createAbsentMessageRepresentation(ITemplateContext context, Class origin, String key, Object[] messageParameters) {
        return null; // as default of framework (you can override if it needs)
    }
}