1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.deskclock;
18 
19 import android.annotation.TargetApi;
20 import android.app.Activity;
21 import android.app.VoiceInteractor;
22 import android.os.Build;
23 
24 /**
25  * Notifies Voice Interactor about whether the action
26  * was successful. Voice Interactor is called only if
27  * the build version is post-Lollipop.
28  */
29 public final class Voice {
30 
31     private static Delegate sDelegate = new VoiceInteractorDelegate();
32 
Voice()33     private Voice() { }
34 
setDelegate(Delegate delegate)35     public static void setDelegate(Delegate delegate) {
36         sDelegate = delegate;
37     }
38 
getDelegate()39     public static Delegate getDelegate() {
40         return sDelegate;
41     }
42 
notifySuccess(Activity activity, String message)43     public static void notifySuccess(Activity activity, String message) {
44         if (Utils.isMOrLater()) {
45             sDelegate.notifySuccess(activity.getVoiceInteractor(), message);
46         }
47     }
48 
notifyFailure(Activity activity, String message)49     public static void notifyFailure(Activity activity, String message) {
50         if (Utils.isMOrLater()) {
51             sDelegate.notifyFailure(activity.getVoiceInteractor(), message);
52         }
53     }
54 
55     public interface Delegate {
notifySuccess(VoiceInteractor vi, String message)56         void notifySuccess(VoiceInteractor vi, String message);
57 
notifyFailure(VoiceInteractor vi, String message)58         void notifyFailure(VoiceInteractor vi, String message);
59     }
60 
61     @TargetApi(Build.VERSION_CODES.M)
62     private static class VoiceInteractorDelegate implements Delegate {
63         @Override
notifySuccess(VoiceInteractor vi, String message)64         public void notifySuccess(VoiceInteractor vi, String message) {
65             if (vi != null)  {
66                 final VoiceInteractor.Prompt prompt = new VoiceInteractor.Prompt(message);
67                 vi.submitRequest(new VoiceInteractor.CompleteVoiceRequest(prompt, null));
68             }
69         }
70 
71         @Override
notifyFailure(VoiceInteractor vi, String message)72         public void notifyFailure(VoiceInteractor vi, String message) {
73             if (vi != null)  {
74                 final VoiceInteractor.Prompt prompt = new VoiceInteractor.Prompt(message);
75                 vi.submitRequest(new VoiceInteractor.AbortVoiceRequest(prompt, null));
76             }
77         }
78     }
79 }