1 /*
2  * Copyright (C) 2019 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.example.android.autofillkeyboard;
18 
19 import android.view.KeyEvent;
20 import android.view.inputmethod.InputConnection;
21 
22 /** Decodes key data and applies changes to {@link InputConnection}. */
23 final class Decoder {
24 
25     private final InputConnection mInputConnection;
26 
Decoder(InputConnection inputConnection)27     Decoder(InputConnection inputConnection) {
28         this.mInputConnection = inputConnection;
29     }
30 
decodeAndApply(String data)31     void decodeAndApply(String data) {
32         if ("DEL".equals(data)) {
33             mInputConnection.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL));
34         } else if ("ENT".equals(data)) {
35             mInputConnection.sendKeyEvent(
36                     new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER));
37         } else if ("SPA".equals(data)) {
38             mInputConnection.sendKeyEvent(
39                     new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_SPACE));
40         } else {
41             mInputConnection.commitText(data, 1);
42         }
43     }
44 
isEmpty()45     boolean isEmpty() {
46         if (mInputConnection.getTextBeforeCursor(1, 0).length() == 0
47                 && mInputConnection.getTextAfterCursor(1, 0).length() == 0) {
48             return true;
49         }
50         return false;
51     }
52 }
53