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 */
16package com.android.statsd.loadtest;
17
18import android.text.Editable;
19import android.text.TextWatcher;
20import android.util.Log;
21import android.widget.TextView;
22
23public abstract class NumericalWatcher implements TextWatcher {
24
25    private static final String TAG = "loadtest.NumericalWatcher";
26
27    private final TextView mTextView;
28    private final int mMin;
29    private final int mMax;
30    private int currentValue = -1;
31
32    public NumericalWatcher(TextView textView, int min, int max) {
33        mTextView = textView;
34        mMin = min;
35        mMax = max;
36    }
37
38    public abstract void onNewValue(int newValue);
39
40    @Override
41    final public void afterTextChanged(Editable editable) {
42        String s = mTextView.getText().toString();
43        if (s.isEmpty()) {
44          return;
45        }
46        int unsanitized = Integer.parseInt(s);
47        int newValue = sanitize(unsanitized);
48        if (currentValue != newValue || unsanitized != newValue) {
49            currentValue = newValue;
50            editable.clear();
51            editable.append(newValue + "");
52        }
53        onNewValue(newValue);
54    }
55
56    @Override
57    final public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
58
59    @Override
60    final public void onTextChanged(CharSequence s, int start, int before, int count) {}
61
62    private int sanitize(int val) {
63        if (val > mMax) {
64            val = mMax;
65        } else if (val < mMin) {
66            val = mMin;
67        }
68        return val;
69    }
70}
71