1 /**
2  * Copyright (C) 2021 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 package com.android.car.voicecontrol;
17 
18 import android.content.Context;
19 import android.os.Handler;
20 import android.util.Log;
21 import android.view.LayoutInflater;
22 import android.view.View;
23 import android.widget.TextView;
24 
25 import androidx.annotation.UiThread;
26 
27 /**
28  * Controller of voice plate UI
29  */
30 public class VoicePlateController {
31     private static final String TAG = "Mica.VoicePlatePresenter";
32     private final Context mContext;
33     private View mVoicePlate;
34     private View mContainer;
35     private TextView mRecognizedText;
36     private TextView mState;
37     private Handler mHandler = new Handler();
38 
39     public enum State {
40         IDLE,
41         LISTENING,
42         LISTENING_ACTIVE,
43         LISTENING_STREAMING,
44         PROCESSING,
45         DELIVERING,
46     }
47 
VoicePlateController(Context context, LayoutInflater inflater)48     public VoicePlateController(Context context,
49                                 LayoutInflater inflater) {
50         mContext = context;
51         mVoicePlate = inflater.inflate(R.layout.voice_plate, null);
52         mState = mVoicePlate.findViewById(R.id.state);
53         mContainer = mVoicePlate.findViewById(R.id.container);
54         mRecognizedText = mVoicePlate.findViewById(R.id.recognized_text);
55     }
56 
57     /**
58      * @return root view of voice plate
59      */
getContentView()60     public View getContentView() {
61         return mVoicePlate;
62     }
63 
64     /**
65      * Updates voice place state
66      */
updateState(State state)67     public void updateState(State state) {
68         mHandler.post(() -> doUpdateState(state));
69     }
70 
71     @UiThread
doUpdateState(State state)72     private void doUpdateState(State state) {
73         Log.d(TAG, "UpdateState: " + state);
74         mState.setText(state.toString());
75         switch (state) {
76             case IDLE:
77                 mVoicePlate.setVisibility(View.GONE);
78                 break;
79             case LISTENING:
80                 mVoicePlate.setVisibility(View.VISIBLE);
81                 mContainer.setBackgroundColor(mContext
82                         .getColor(R.color.voice_plate_listening));
83                 break;
84             case LISTENING_ACTIVE:
85                 mVoicePlate.setVisibility(View.VISIBLE);
86                 mContainer.setBackgroundColor(mContext
87                         .getColor(R.color.voice_plate_listening_active));
88                 break;
89             case LISTENING_STREAMING:
90                 mVoicePlate.setVisibility(View.VISIBLE);
91                 mContainer.setBackgroundColor(mContext
92                         .getColor(R.color.voice_plate_partial_recognition));
93                 break;
94             case PROCESSING:
95                 mVoicePlate.setVisibility(View.VISIBLE);
96                 mContainer.setBackgroundColor(mContext
97                         .getColor(R.color.voice_plate_processing));
98                 break;
99             case DELIVERING:
100                 mVoicePlate.setVisibility(View.VISIBLE);
101                 mContainer.setBackgroundColor(mContext
102                         .getColor(R.color.voice_plate_delivering));
103                 break;
104         }
105     }
106 
107     /**
108      * Updates recognized text view
109      */
updateRecognizedText(String text)110     public void updateRecognizedText(String text) {
111         Log.d(TAG, "UpdateRecognizedText: " + text);
112         mHandler.post(() -> doUpdateRecognizedText(text));
113     }
114 
115     @UiThread
doUpdateRecognizedText(String text)116     private void doUpdateRecognizedText(String text) {
117         mRecognizedText.setText(text);
118     }
119 }
120