/*
 * Copyright 2014 Red Hat, Inc.
 *
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  and Apache License v2.0 which accompanies this distribution.
 *
 *  The Eclipse Public License is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  The Apache License v2.0 is available at
 *  http://www.opensource.org/licenses/apache2.0.php
 *
 *  You may elect to redistribute this code under either of these licenses.
 */
package io.vertx.ext.web.handler.impl;

import io.vertx.core.http.HttpHeaders;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.web.LanguageHeader;
import io.vertx.ext.web.handler.TemplateHandler;
import io.vertx.ext.web.impl.Utils;
import io.vertx.ext.web.common.template.TemplateEngine;
import io.vertx.ext.web.RoutingContext;

import java.util.Locale;

Author:Tim Fox
/** * * @author <a href="http://tfox.org">Tim Fox</a> */
public class TemplateHandlerImpl implements TemplateHandler { private final TemplateEngine engine; private final String templateDirectory; private final String contentType; private String indexTemplate; public TemplateHandlerImpl(TemplateEngine engine, String templateDirectory, String contentType) { this.engine = engine; this.templateDirectory = templateDirectory == null || templateDirectory.isEmpty() ? "." : templateDirectory; this.contentType = contentType; this.indexTemplate = DEFAULT_INDEX_TEMPLATE; } @Override public void handle(RoutingContext context) { String file = Utils.pathOffset(context.normalizedPath(), context); if (file.endsWith("/") && null != indexTemplate) { file += indexTemplate; } // files are always normalized (start with /) // however if there's no base strip / to avoid making the path absolute if (templateDirectory == null || "".equals(templateDirectory)) { // strip the leading slash from the filename file = file.substring(1); } // put the locale if present and not on the context yet into the context. if (!context.data().containsKey("lang")) { for (LanguageHeader acceptableLocale : context.acceptableLanguages()) { try { Locale.forLanguageTag(acceptableLocale.value()); } catch (RuntimeException e) { // we couldn't parse the locale so it's not valid or unknown continue; } context.data().put("lang", acceptableLocale.value()); break; } } // render using the engine engine.render(new JsonObject(context.data()), templateDirectory + file, res -> { if (res.succeeded()) { context.response().putHeader(HttpHeaders.CONTENT_TYPE, contentType).end(res.result()); } else { context.fail(res.cause()); } }); } @Override public TemplateHandler setIndexTemplate(String indexTemplate) { this.indexTemplate = indexTemplate; return this; } }