# 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 = Java.type('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 the template
       <p>
       <b>NOTE</b> if you call method directly (i.e. not using {@link TemplateHandler}) make sure
       that <i>templateFileName</i> is sanitized via {@link Utils#normalizePath}

       @public
       @param context {RoutingContext} the routing context
       @param templateDirectory {string} the template directory to use
       @param templateFileName {string} the relative 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() {
        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)"](__args[0]._jdel, __args[1], function(ar) {
          if (ar.succeeded()) {
            __args[2](utils.convReturnVertxGen(Buffer, ar.result()), null);
          } else {
            __args[2](null, ar.cause());
          }
        });
        }  else if (__args.length === 4 && typeof __args[0] === 'object' && __args[0]._jdel && typeof __args[1] === 'string' && typeof __args[2] === 'string' && typeof __args[3] === 'function') {
          j_templateEngine["render(io.vertx.ext.web.RoutingContext,java.lang.String,java.lang.String,io.vertx.core.Handler)"](__args[0]._jdel, __args[1], __args[2], function(ar) {
          if (ar.succeeded()) {
            __args[3](utils.convReturnVertxGen(Buffer, ar.result()), null);
          } else {
            __args[3](null, ar.cause());
          }
        });
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Returns true if the template engine caches template files. If false, then template files are freshly loaded each
       time they are used.

       @public

       @return {boolean} True if template files are cached; otherwise, false.
       */
      this.isCachingEnabled = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return j_templateEngine["isCachingEnabled()"]();
        } 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;
    };

    TemplateEngine._jclass = utils.getJavaClass("io.vertx.ext.web.templ.TemplateEngine");
    TemplateEngine._jtype = {
      accept: function(obj) {
        return TemplateEngine._jclass.isInstance(obj._jdel);
      },
      wrap: function(jdel) {
        var obj = Object.create(TemplateEngine.prototype, {});
        TemplateEngine.apply(obj, arguments);
        return obj;
      },
      unwrap: function(obj) {
        return obj._jdel;
      }
    };
    TemplateEngine._create = function(jdel) {
      var obj = Object.create(TemplateEngine.prototype, {});
      TemplateEngine.apply(obj, arguments);
      return obj;
    }
    module.exports = TemplateEngine;