# Source: vertx-web-js/template_engine.js

    /*
     * Copyright 2014 Red Hat, Inc.
     *
     * Red Hat 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.
     */

    /** @module vertx-web-js/template_engine */
    var utils = require('vertx-js/util/utils');
    var Buffer = require('vertx-js/buffer');
    var RoutingContext = require('vertx-web-js/routing_context');

    var io = Packages.io;
    var JsonObject = io.vertx.core.json.JsonObject;
    var JTemplateEngine = io.vertx.ext.web.templ.TemplateEngine;

    /**
     A template engine uses a specific template and the data in a routing context to render a resource into a buffer.
     <p>
     Concrete implementations exist for several well-known template engines.

     @class
    */
    var TemplateEngine = function(j_val) {

      var j_templateEngine = j_val;
      var that = this;

      /**
       Render

       @public
       @param context {RoutingContext} the routing context
       @param templateFileName {string} the template file name to use
       @param handler {function} the handler that will be called with a result containing the buffer or a failure.
       */
      this.render = function(context, templateFileName, handler) {
        var __args = arguments;
        if (__args.length === 3 && typeof __args[0] === 'object' && __args[0]._jdel && typeof __args[1] === 'string' && typeof __args[2] === 'function') {
          j_templateEngine["render(io.vertx.ext.web.RoutingContext,java.lang.String,io.vertx.core.Handler)"](context._jdel, templateFileName, function(ar) {
          if (ar.succeeded()) {
            handler(utils.convReturnVertxGen(ar.result(), Buffer), null);
          } else {
            handler(null, ar.cause());
          }
        });
        } else throw new TypeError('function invoked with invalid arguments');
      };

      // A reference to the underlying Java delegate
      // NOTE! This is an internal API and must not be used in user code.
      // If you rely on this property your code is likely to break if we change it / remove it without warning.
      this._jdel = j_templateEngine;
    };

    // We export the Constructor function
    module.exports = TemplateEngine;