1 /*
2  * Copyright (C) 2017 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 android.autofillservice.cts.testcore;
17 
18 import android.text.Editable;
19 import android.text.TextWatcher;
20 import android.widget.EditText;
21 
22 import java.util.regex.Pattern;
23 
24 /**
25  * A {@link TextWatcher} that appends pound signs ({@code #} at the beginning and end of the text.
26  */
27 public final class AntiTrimmerTextWatcher implements TextWatcher {
28 
29     /**
30      * Regex used to revert a String that was "anti-trimmed".
31      */
32     public static final Pattern TRIMMER_PATTERN = Pattern.compile("#(.*)#");
33 
34     private final EditText mView;
35 
AntiTrimmerTextWatcher(EditText view)36     public AntiTrimmerTextWatcher(EditText view) {
37         mView = view;
38         mView.addTextChangedListener(this);
39     }
40 
41     @Override
onTextChanged(CharSequence s, int start, int before, int count)42     public void onTextChanged(CharSequence s, int start, int before, int count) {
43         mView.removeTextChangedListener(this);
44         mView.setText("#" + s + "#");
45     }
46 
47     @Override
beforeTextChanged(CharSequence s, int start, int count, int after)48     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
49     }
50 
51     @Override
afterTextChanged(Editable s)52     public void afterTextChanged(Editable s) {
53     }
54 }
55