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 
17 package com.android.settings.wifi.tether;
18 
19 import android.content.Context;
20 import android.net.ConnectivityManager;
21 import android.net.wifi.WifiManager;
22 
23 import androidx.preference.Preference;
24 import androidx.preference.PreferenceScreen;
25 
26 import com.android.settings.core.PreferenceControllerMixin;
27 import com.android.settingslib.core.AbstractPreferenceController;
28 
29 public abstract class WifiTetherBasePreferenceController extends AbstractPreferenceController
30         implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
31 
32     public interface OnTetherConfigUpdateListener {
onTetherConfigUpdated()33         void onTetherConfigUpdated();
34     }
35 
36     protected final WifiManager mWifiManager;
37     protected final String[] mWifiRegexs;
38     protected final ConnectivityManager mCm;
39     protected final OnTetherConfigUpdateListener mListener;
40 
41     protected Preference mPreference;
42 
WifiTetherBasePreferenceController(Context context, OnTetherConfigUpdateListener listener)43     public WifiTetherBasePreferenceController(Context context,
44             OnTetherConfigUpdateListener listener) {
45         super(context);
46         mListener = listener;
47         mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
48         mCm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
49         mWifiRegexs = mCm.getTetherableWifiRegexs();
50     }
51 
52     @Override
isAvailable()53     public boolean isAvailable() {
54         return mWifiManager != null && mWifiRegexs != null && mWifiRegexs.length > 0;
55     }
56 
57     @Override
displayPreference(PreferenceScreen screen)58     public void displayPreference(PreferenceScreen screen) {
59         super.displayPreference(screen);
60         mPreference = screen.findPreference(getPreferenceKey());
61         updateDisplay();
62     }
63 
updateDisplay()64     public abstract void updateDisplay();
65 }
66