host_factory.js revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5
6/**
7 * @fileoverview A host factory.  This factory allows us to decouple the
8 * cvox.Host|Tts|... creatation from the main ChromeVox code.
9 */
10
11goog.provide('cvox.HostFactory');
12
13goog.require('cvox.AbstractBraille');
14goog.require('cvox.AbstractEarcons');
15goog.require('cvox.AbstractHost');
16goog.require('cvox.AbstractMathJax');
17goog.require('cvox.AbstractTts');
18
19
20/**
21 * @constructor
22 */
23cvox.HostFactory = function() {};
24
25/**
26 * Returns the host.
27 * @return {cvox.AbstractHost}
28 */
29cvox.HostFactory.getHost = function() {
30  return new cvox.HostFactory.hostConstructor;
31};
32
33/**
34 * Returns the TTS interface.
35 * @return {cvox.TtsInterface} The TTS engine.
36 */
37cvox.HostFactory.getTts = function() {
38  return new cvox.HostFactory.ttsConstructor;
39};
40
41/**
42 * Returns the Braille interface.
43 * @return {cvox.BrailleInterface} The Braille interface.
44 */
45cvox.HostFactory.getBraille = function() {
46  return new cvox.HostFactory.brailleConstructor;
47};
48
49/**
50 * Returns the earcons interface.
51 * @return {cvox.AbstractEarcons}
52 */
53cvox.HostFactory.getEarcons = function() {
54  return new cvox.HostFactory.earconsConstructor;
55};
56
57/**
58 * Returns the MathJax interface.
59 * @return {cvox.MathJaxInterface} The MathJax interface.
60 */
61cvox.HostFactory.getMathJax = function() {
62  return new cvox.HostFactory.mathJaxConstructor;
63};
64
65/**
66 * @type {function (new:cvox.AbstractHost)}
67 */
68cvox.HostFactory.hostConstructor;
69
70/**
71 * @type {function (new:cvox.TtsInterface)}
72 */
73cvox.HostFactory.ttsConstructor;
74
75/**
76 * @type {function (new:cvox.BrailleInterface)}
77 */
78cvox.HostFactory.brailleConstructor;
79
80/**
81 * @type {function (new:cvox.AbstractEarcons)}
82 */
83cvox.HostFactory.earconsConstructor;
84
85
86/**
87 * @type {function (new:cvox.AbstractMathJax)}
88 */
89cvox.HostFactory.mathJaxConstructor;
90