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 import android.support.annotation.VisibleForTesting; 22 import android.support.v14.preference.SwitchPreference; 23 import android.support.v7.preference.Preference; 24 25 import com.android.settings.core.PreferenceControllerMixin; 26 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 27 28 public class TetheringHardwareAccelPreferenceController extends DeveloperOptionsPreferenceController 29 implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin { 30 31 private static final String TETHERING_HARDWARE_OFFLOAD = "tethering_hardware_offload"; 32 33 // We use the "disabled status" in code, but show the opposite text 34 // on screen. So a value 0 indicates the tethering hardware accel is enabled. 35 @VisibleForTesting 36 static final int SETTING_VALUE_ON = 0; 37 @VisibleForTesting 38 static final int SETTING_VALUE_OFF = 1; 39 TetheringHardwareAccelPreferenceController(Context context)40 public TetheringHardwareAccelPreferenceController(Context context) { 41 super(context); 42 } 43 44 @Override getPreferenceKey()45 public String getPreferenceKey() { 46 return TETHERING_HARDWARE_OFFLOAD; 47 } 48 49 @Override onPreferenceChange(Preference preference, Object newValue)50 public boolean onPreferenceChange(Preference preference, Object newValue) { 51 final boolean isEnabled = (Boolean) newValue; 52 Settings.Global.putInt(mContext.getContentResolver(), 53 Settings.Global.TETHER_OFFLOAD_DISABLED, 54 isEnabled ? SETTING_VALUE_ON : SETTING_VALUE_OFF); 55 return true; 56 } 57 58 @Override updateState(Preference preference)59 public void updateState(Preference preference) { 60 final int tetheringMode = Settings.Global.getInt( 61 mContext.getContentResolver(), 62 Settings.Global.TETHER_OFFLOAD_DISABLED, 0 /* default */); 63 ((SwitchPreference) mPreference).setChecked(tetheringMode != SETTING_VALUE_OFF); 64 } 65 66 @Override onDeveloperOptionsSwitchDisabled()67 protected void onDeveloperOptionsSwitchDisabled() { 68 super.onDeveloperOptionsSwitchDisabled(); 69 Settings.Global.putInt(mContext.getContentResolver(), 70 Settings.Global.TETHER_OFFLOAD_DISABLED, SETTING_VALUE_OFF); 71 ((SwitchPreference) mPreference).setChecked(false); 72 } 73 } 74