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 // TODO(b/151133650): Replace AbstractPreferenceController with BasePreferenceController.
30 public abstract class WifiTetherBasePreferenceController extends AbstractPreferenceController
31         implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
32 
33     public interface OnTetherConfigUpdateListener {
onTetherConfigUpdated(AbstractPreferenceController context)34         void onTetherConfigUpdated(AbstractPreferenceController context);
35     }
36 
37     protected final WifiManager mWifiManager;
38     protected final String[] mWifiRegexs;
39     protected final ConnectivityManager mCm;
40     protected final OnTetherConfigUpdateListener mListener;
41 
42     protected Preference mPreference;
43 
WifiTetherBasePreferenceController(Context context, OnTetherConfigUpdateListener listener)44     public WifiTetherBasePreferenceController(Context context,
45             OnTetherConfigUpdateListener listener) {
46         super(context);
47         mListener = listener;
48         mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
49         mCm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
50         mWifiRegexs = mCm.getTetherableWifiRegexs();
51     }
52 
53     @Override
isAvailable()54     public boolean isAvailable() {
55         return mWifiManager != null && mWifiRegexs != null && mWifiRegexs.length > 0;
56     }
57 
58     @Override
displayPreference(PreferenceScreen screen)59     public void displayPreference(PreferenceScreen screen) {
60         super.displayPreference(screen);
61         mPreference = screen.findPreference(getPreferenceKey());
62         updateDisplay();
63     }
64 
updateDisplay()65     public abstract void updateDisplay();
66 }
67