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