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.development;
18 
19 import android.content.Context;
20 import android.provider.Settings;
21 
22 import androidx.annotation.VisibleForTesting;
23 import androidx.preference.Preference;
24 import androidx.preference.SwitchPreference;
25 
26 import com.android.settings.core.PreferenceControllerMixin;
27 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
28 
29 public class TetheringHardwareAccelPreferenceController extends DeveloperOptionsPreferenceController
30         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
31 
32     private static final String TETHERING_HARDWARE_OFFLOAD = "tethering_hardware_offload";
33 
34     // We use the "disabled status" in code, but show the opposite text
35     // on screen. So a value 0 indicates the tethering hardware accel is enabled.
36     @VisibleForTesting
37     static final int SETTING_VALUE_ON = 0;
38     @VisibleForTesting
39     static final int SETTING_VALUE_OFF = 1;
40 
TetheringHardwareAccelPreferenceController(Context context)41     public TetheringHardwareAccelPreferenceController(Context context) {
42         super(context);
43     }
44 
45     @Override
getPreferenceKey()46     public String getPreferenceKey() {
47         return TETHERING_HARDWARE_OFFLOAD;
48     }
49 
50     @Override
onPreferenceChange(Preference preference, Object newValue)51     public boolean onPreferenceChange(Preference preference, Object newValue) {
52         final boolean isEnabled = (Boolean) newValue;
53         Settings.Global.putInt(mContext.getContentResolver(),
54                 Settings.Global.TETHER_OFFLOAD_DISABLED,
55                 isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF);
56         return true;
57     }
58 
59     @Override
updateState(Preference preference)60     public void updateState(Preference preference) {
61         final int tetheringMode = Settings.Global.getInt(
62                 mContext.getContentResolver(),
63                 Settings.Global.TETHER_OFFLOAD_DISABLED, 0 /* default */);
64         ((SwitchPreference) mPreference).setChecked(tetheringMode != SETTING_VALUE_OFF);
65     }
66 
67     @Override
onDeveloperOptionsSwitchDisabled()68     protected void onDeveloperOptionsSwitchDisabled() {
69         super.onDeveloperOptionsSwitchDisabled();
70         Settings.Global.putInt(mContext.getContentResolver(),
71                 Settings.Global.TETHER_OFFLOAD_DISABLED, SETTING_VALUE_OFF);
72         ((SwitchPreference) mPreference).setChecked(false);
73     }
74 }
75