# Source: vertx-js/future.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-js/future */
    var utils = require('vertx-js/util/utils');

    var io = Packages.io;
    var JsonObject = io.vertx.core.json.JsonObject;
    var JFuture = io.vertx.core.Future;

    /**
     Represents the result of an action that may, or may not, have occurred yet.
     <p>

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

      var j_future = j_val;
      var that = this;

      /**
       Has the future completed?
       <p>
       It's completed if it's either succeeded or failed.

       @public

       @return {boolean} true if completed, false if not
       */
      this.isComplete = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return j_future["isComplete()"]();
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Set a handler for the result.
       <p>
       If the future has already been completed it will be called immediately. Otherwise it will be called when the
       future is completed.

       @public
       @param handler {function} the Handler that will be called with the result
       @return {Future} a reference to this, so it can be used fluently
       */
      this.setHandler = function(handler) {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'function') {
          j_future["setHandler(io.vertx.core.Handler)"](function(ar) {
          if (ar.succeeded()) {
            handler(utils.convReturnTypeUnknown(ar.result()), null);
          } else {
            handler(null, ar.cause());
          }
        });
          return that;
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Set the result. Any handler will be called, if there is one, and the future will be marked as completed.

       @public
       @param result {Object} the result
       */
      this.complete = function() {
        var __args = arguments;
        if (__args.length === 0) {
          j_future["complete()"]();
        }  else if (__args.length === 1 && typeof __args[0] !== 'function') {
          j_future["complete(java.lang.Object)"](utils.convParamTypeUnknown(__args[0]));
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Set the failure. Any handler will be called, if there is one, and the future will be marked as completed.

       @public
       @param failureMessage {string} the failure message
       */
      this.fail = function() {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'object') {
          j_future["fail(java.lang.Throwable)"](utils.convParamThrowable(__args[0]));
        }  else if (__args.length === 1 && typeof __args[0] === 'string') {
          j_future["fail(java.lang.String)"](__args[0]);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       The result of the operation. This will be null if the operation failed.

       @public

       @return {Object} the result or null if the operation failed.
       */
      this.result = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return utils.convReturnTypeUnknown(j_future["result()"]());
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       A Throwable describing failure. This will be null if the operation succeeded.

       @public

       @return {todo} the cause or null if the operation succeeded.
       */
      this.cause = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return utils.convReturnThrowable(j_future["cause()"]());
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Did it succeed?

       @public

       @return {boolean} true if it succeded or false otherwise
       */
      this.succeeded = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return j_future["succeeded()"]();
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Did it fail?

       @public

       @return {boolean} true if it failed or false otherwise
       */
      this.failed = function() {
        var __args = arguments;
        if (__args.length === 0) {
          return j_future["failed()"]();
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Compose this future with a provided <code>next</code> future.<p>

       When this (the one on which <code>compose</code> is called) future succeeds, the <code>handler</code> will be called with
       the completed value, this handler should complete the next future.<p>

       If the <code>handler</code> throws an exception, the returned future will be failed with this exception.<p>

       When this future fails, the failure will be propagated to the <code>next</code> future and the <code>handler</code>
       will not be called.

       @public
       @param handler {function} the handler
       @param next {Future} the next future
       @return {Future} the next future, used for chaining
       */
      this.compose = function() {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'function') {
          return utils.convReturnVertxGen(j_future["compose(java.util.function.Function)"](function(jVal) {
          var jRet = __args[0](utils.convReturnTypeUnknown(jVal));
          return jRet._jdel;
        }), Future);
        }  else if (__args.length === 2 && typeof __args[0] === 'function' && typeof __args[1] === 'object' && __args[1]._jdel) {
          return utils.convReturnVertxGen(j_future["compose(io.vertx.core.Handler,io.vertx.core.Future)"](function(jVal) {
          __args[0](utils.convReturnTypeUnknown(jVal));
        }, __args[1]._jdel), Future);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**
       Map the result of a future to a specific <code>value</code>.<p>

       When this future succeeds, this <code>value</code> will complete the future returned by this method call.<p>

       When this future fails, the failure will be propagated to the returned future.

       @public
       @param value {Object} the value that eventually completes the mapped future
       @return {Future} the mapped future
       */
      this.map = function() {
        var __args = arguments;
        if (__args.length === 1 && typeof __args[0] === 'function') {
          return utils.convReturnVertxGen(j_future["map(java.util.function.Function)"](function(jVal) {
          var jRet = __args[0](utils.convReturnTypeUnknown(jVal));
          return utils.convParamTypeUnknown(jRet);
        }), Future);
        }  else if (__args.length === 1 && typeof __args[0] !== 'function') {
          return utils.convReturnVertxGen(j_future["map(java.lang.Object)"](utils.convParamTypeUnknown(__args[0])), Future);
        } else throw new TypeError('function invoked with invalid arguments');
      };

      /**

       @public

       @return {function} an handler completing this future
       */
      this.completer = function() {
        var __args = arguments;
        if (__args.length === 0) {
          if (that.cachedcompleter == null) {
            that.cachedcompleter = utils.convReturnHandlerAsyncResult(j_future["completer()"](), function(result) { return utils.convParamTypeUnknown(result); });
          }
          return that.cachedcompleter;
        } 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_future;
    };

    /**
     Create a future that hasn't completed yet

     @memberof module:vertx-js/future

     @return {Future} the future
     */
    Future.future = function() {
      var __args = arguments;
      if (__args.length === 0) {
        return utils.convReturnVertxGen(JFuture["future()"](), Future);
      } else throw new TypeError('function invoked with invalid arguments');
    };

    /**
     Created a succeeded future with the specified result.

     @memberof module:vertx-js/future
     @param result {Object} the result
     @return {Future} the future
     */
    Future.succeededFuture = function() {
      var __args = arguments;
      if (__args.length === 0) {
        return utils.convReturnVertxGen(JFuture["succeededFuture()"](), Future);
      }else if (__args.length === 1 && typeof __args[0] !== 'function') {
        return utils.convReturnVertxGen(JFuture["succeededFuture(java.lang.Object)"](utils.convParamTypeUnknown(__args[0])), Future);
      } else throw new TypeError('function invoked with invalid arguments');
    };

    /**
     Create a failed future with the specified failure message.

     @memberof module:vertx-js/future
     @param failureMessage {string} the failure message
     @return {Future} the future
     */
    Future.failedFuture = function(failureMessage) {
      var __args = arguments;
      if (__args.length === 1 && typeof __args[0] === 'string') {
        return utils.convReturnVertxGen(JFuture["failedFuture(java.lang.String)"](failureMessage), Future);
      } else throw new TypeError('function invoked with invalid arguments');
    };

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